1. Usian Bolt holds the 100 m world record with a time of 9.58 s. During...
1. Usian Bolt holds the 100 m world record with a time of 9.58 s. During the race, he has a reaction time of 0.15 s, and then he accelerates at a constant rate from rest to his top speed in 2.73 s. He then runs at this top speed for the rest of the race.
a) What was his top speed during the race?
Hint: You might find it helpful to start this problem by sketching the velocity vs time curve for this problem. Since you don’t know his top speed, leave this as an unknown variable. How can you find displacement or distance traveled from the velocity vs time curve? Remember that the sum of the distance traveled through each of the different segments of the race must add to 100 m.
b) Sketch the acceleration vs time curve for his race. Make sure you clearly label the important times and accelerations.
c) Sketch the velocity vs time curve for his race. Make sure you clearly label the important times and velocities.
d) Sketch the position vs time curve for his race. Make sure you clearly label the important times and positions.
Homework Answers
Add Answer to:
1. Usian Bolt holds the 100 m world record with a time of 9.58
s. During...
1. Usian Bolt holds the 100 m world record with a time of 9.58 s. During...
1. Usian Bolt holds the 100 m world record with a time of 9.58 s. During the race, he has a reaction time of 0.15 s, and then he accelerates at a constant rate from rest to his top speed in 2.73 s. He then runs at this top speed for the rest of the race. a) What was his top speed during the race? Hint: You might find it helpful to start this problem by sketching the velocity vs...
Usain Bolt can sprint 100 m in 10s. He accelerates uniformly for the first 3 s...
Usain Bolt can sprint 100 m in 10s. He accelerates uniformly for the first 3 s of the race and then maintains a constant velocity for the final 7s of the race. Find his acceleration during the first 3s of the race. What distance does he travel in the first 3s of the race? What is the velocity when be finishes the race?
Antron Brown holds the world record for fastest time in a 1/4 mile drag race in...
Antron Brown holds the world record for fastest time in a 1/4 mile drag race in the Top Fuel category. On October 8, 2012, he completed the race in 3-701 seconds at a track in Mohnton, Pennsylvania. a) If one mile equals 1,609.3 m, how far did he go, in meters? 0.25 es 02.336 rokrs b) What his average acceleration?
A hotel elevator ascends 200 m with a maximum speed of 5.0 m/s. Its acceleration and...
A hotel elevator ascends 200 m
with a maximum speed of 5.0 m/s. Its acceleration and deceleration
both have a magnitude of 1.0 m/s2. How far does the
elevator move while accelerating to full speed from rest? how long
does it take to make the complete trip from bottom to top?
2. MP HW P2.58 (Refer to example 2.10, p.47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s...
2. The following velocity-vs-time graph represents the motion of a race car during the first few...
2. The following velocity-vs-time graph represents the motion of a race car during the first few sec- onds of a race. The track may be assumed to be straight during this period. Afterwards the car continues to travel at a constant speed around the rest of the track, ending its lap back on the start/finish line. [16 points] velocity (m/s) 45 25 -time (S) 6 (a) What is the car's velocity after one second? [3] (b) How far has it...
The following data represent the first 30 seconds of actor Crispin Glover’s drive to work. Time...
The following data represent the first 30 seconds of actor Crispin Glover’s drive to work. Time (s) Position (m) Distance (m) 0 0 0 5 10 10 10 30 30 15 30 30 20 20 40 25 50 70 30 80 120 a. Sketch the graphs of position vs. time and distance vs. time. Label your x and y axes appropriately. b. Why is there a discrepancy between the distance covered and the change in position during the time period...
A car is initially at rest on a straight road. The histogram below shows the car's...
A car is initially at rest on a straight road. The histogram below shows the car's acceleration along that road as a function of time. 1 -3 .1234567ธ9101112 14 Tine (s) Calculate the speed of the car at t3s. Your receipt no. is 158-5693Previous Tries 6.00 You are correct. Calculate the distance traveled during the first 5 s. 24.0 m ubAnwer Incorrect. Tries 19/20 Previous Tries Calculate the distance traveled from t-10 s to t=14 s 36 m The car...
Satari File Edit View History Bookmarks Window Help Acceleration vs. tine A car is initially at...
Satari File Edit View History Bookmarks Window Help Acceleration vs. tine A car is initially at rest on a straight road. The histogram below shows the car's acceleration along that road as a functio Course Contents Homework Homework sets &1( due 01234567#91811121314 Tine (s) Calculate the speed of the car att 5.00 m/s 3 s You are correct. Your receipt no. Is 158-4861 o Previous Tres 158-4861 Calculate the distance traveled during the first 6 s Incorrect. Tries 2/20 Previous...
Sean is running a 100 m dash. When the starter's pistol fires, he leaves the starting...
Sean is running a 100 m dash. When the starter's pistol fires, he leaves the starting block and continues speeding up until 6 s into the race, when he reaches his top speed of 11 m/s. He holds this speed for 2 s; then his speed has slowed to 10 m/s by the time he crosses the finish line 11 s after he started the race 11) Chapter 2, Problem 6 Assume that Sean starts from rest and his motion...
Matt is sailboarding northeast Across the river with the velocity of 10 m/s relative to the...
Matt is sailboarding northeast Across the river with the velocity
of 10 m/s relative to the water the river current is moving the
water north at the velocity of three m/s down stream if the angle
between the relative velocity of the sailboard in the river current
is 30° what is the resultant or true velocity of the sailboard?
and the river current is 30 e relative velocity of the sailboard and the of the sailboard? lacity 3 m/s (velocity...
1. Usian Bolt holds the 100 m world record with a time of 9.58 s. During the race, he has a reaction time of 0.15 s, and then he accelerates at a constant rate from rest to his top speed in 2.73 s. He then runs at this top speed for the rest of the race. a) What was his top speed during the race? Hint: You might find it helpful to start this problem by sketching the velocity vs...
Usain Bolt can sprint 100 m in 10s. He accelerates uniformly for the first 3 s of the race and then maintains a constant velocity for the final 7s of the race. Find his acceleration during the first 3s of the race. What distance does he travel in the first 3s of the race? What is the velocity when be finishes the race?
Antron Brown holds the world record for fastest time in a 1/4 mile drag race in the Top Fuel category. On October 8, 2012, he completed the race in 3-701 seconds at a track in Mohnton, Pennsylvania. a) If one mile equals 1,609.3 m, how far did he go, in meters? 0.25 es 02.336 rokrs b) What his average acceleration?
A hotel elevator ascends 200 m
with a maximum speed of 5.0 m/s. Its acceleration and deceleration
both have a magnitude of 1.0 m/s2. How far does the
elevator move while accelerating to full speed from rest? how long
does it take to make the complete trip from bottom to top?
2. MP HW P2.58 (Refer to example 2.10, p.47) A hotel elevator ascends 200m with maximum speed of 5m/s. Its acceleration and deceleration both have a magnitude of 1.0m/s...
2. The following velocity-vs-time graph represents the motion of a race car during the first few sec- onds of a race. The track may be assumed to be straight during this period. Afterwards the car continues to travel at a constant speed around the rest of the track, ending its lap back on the start/finish line. [16 points] velocity (m/s) 45 25 -time (S) 6 (a) What is the car's velocity after one second? [3] (b) How far has it...
A car is initially at rest on a straight road. The histogram below shows the car's acceleration along that road as a function of time. 1 -3 .1234567ธ9101112 14 Tine (s) Calculate the speed of the car at t3s. Your receipt no. is 158-5693Previous Tries 6.00 You are correct. Calculate the distance traveled during the first 5 s. 24.0 m ubAnwer Incorrect. Tries 19/20 Previous Tries Calculate the distance traveled from t-10 s to t=14 s 36 m The car...
Satari File Edit View History Bookmarks Window Help Acceleration vs. tine A car is initially at rest on a straight road. The histogram below shows the car's acceleration along that road as a functio Course Contents Homework Homework sets &1( due 01234567#91811121314 Tine (s) Calculate the speed of the car att 5.00 m/s 3 s You are correct. Your receipt no. Is 158-4861 o Previous Tres 158-4861 Calculate the distance traveled during the first 6 s Incorrect. Tries 2/20 Previous...
Sean is running a 100 m dash. When the starter's pistol fires, he leaves the starting block and continues speeding up until 6 s into the race, when he reaches his top speed of 11 m/s. He holds this speed for 2 s; then his speed has slowed to 10 m/s by the time he crosses the finish line 11 s after he started the race 11) Chapter 2, Problem 6 Assume that Sean starts from rest and his motion...
Matt is sailboarding northeast Across the river with the velocity
of 10 m/s relative to the water the river current is moving the
water north at the velocity of three m/s down stream if the angle
between the relative velocity of the sailboard in the river current
is 30° what is the resultant or true velocity of the sailboard?
and the river current is 30 e relative velocity of the sailboard and the of the sailboard? lacity 3 m/s (velocity...
Most questions answered within 3 hours.
-
Where is the error in this code sequence?
String s1 = "Hello";
String s2 = "ello";...
asked 10 months ago -
Financial data for Joel de Paris, Inc., for last year
follow:
Joel de Paris, Inc.
Balance...
asked 10 months ago -
Consider this reaction:
Al2(SO4)3 (aq)+ BaCl3
(aq) Al2Cl6 (aq)- +
3BaSO4(s) . What is the...
asked 10 months ago -
Suppose that Savneet is considering increasing her
recent random sample from 20 car rentals to 40...
asked 10 months ago -
Trucks arrive at an unloading terminal at an average rate of 120
per hour.
Trucks arrive...
asked 10 months ago -
Why are methanol and ethanol completely soluble in water while
octanol is not very little soluble....
asked 10 months ago -
A facilities manager at a university reads in a research report
that the mean amount of...
asked 10 months ago -
When the CuSO4 is rehydrated by adding water to the anhydrous
compound, is this an endothermic...
asked 10 months ago -
A ray of sunlight is passing from diamond into crown glass; the
angle of incidence is...
asked 10 months ago -
A block of mass 0.249 kg is placed on top of a light, vertical
spring of...
asked 10 months ago -
how do the kidneys compensate in the presences of acidosis
a) trigger hyperventilate
b) reserve acid...
asked 10 months ago -
Question 501 pts
The rental rate of capital to the firm increases. Which of the
following...
asked 10 months ago