Homework Answers
For a constant velocity the acceleration must be zero.
and we know that
so if a=0, Fnet will be zero as well
For that to happen, a force equal to friction force in the opposite direction need to be applied
so
Option B is correct
Add Answer to:
7) Bob is pulling a wagon by applying a horizontal force, the only other horizonal force...
Question 7 5 pts 7) Bob is pulling a wagon by applying a horizontal force, the...
Question 7 5 pts 7) Bob is pulling a wagon by applying a horizontal force, the only other horizonal force acting on the wagon is a frictional force of 20 N acting on the wagon. if Bob want to pull the wagon at a constant velocity, what horizonal force must Bob apply to the wagon? (Be careful, Canvas will not have the same order for the answers below!) Slightly larger than 20 N Significantly larger than 20 N Exactly 20...
4) Given the kinematic equation below solve for the acceleration à and determine the magnitude of...
4) Given the kinematic equation below solve for the acceleration à and determine the magnitude of the acceleration after time t - 3 seconds given the displacement vectors below. X=(+10 m )X + ( +7 m) =(+1 m )X+(-3 m) 5) Given the following displacement vectors and their resultant vector, determine the components that are missing. (A, B, and C.) A- ( A ) + (-8 m ) + ( 6 m )2 B = ( 10m 8+ ( B,...
6) Bob applies a force with a magnitude of F = 160 N to a box...
6) Bob applies a force with a magnitude of F = 160 N to a box downward at an angle = 60° relative to the horizontal, the box has a weight of 196 N and there is a frictional force of 80 N acting on the box. Which statement best describes the motion of the crate? (Be careful Canvas my not have the same order for the answers) The crate must be at rest. The crate must be moving with...
5) Little Bobby is pushing a cart and the cart starts to slow down, which free...
5) Little Bobby is pushing a cart and the cart starts to slow down, which free body diagram below is correct for the cart slowing down as Little Bobby continues to pushes. A) F FN F D) FN F applied F applied applied F applied 6) Bob applies a force with a magnitude of |F = 160 N to a box downward at an angle = 60° relative to the horizontal, the box has a weight of 196 N and...
13) Mike (mMike = 100 kg) is motionless on a frictionless frozen lake with only a...
13) Mike (mMike = 100 kg) is motionless on a frictionless frozen lake with only a tool box (Mont = 20 kg), in order for Mike to get off the ice he pushes on the tool box with a force of 20 N, what is the accelerations of Mike while he is pushing and in what direction does he move? Mike Tool + X 14) If Cathy is in her car and the car experiences a constant acceleration, which statement...
1) Which term best describes an object's resistance to a change in motion A) Force B)...
1) Which term best describes an object's resistance to a change in motion A) Force B) Inertia C) Acceleration D) Resistance 2) Two skaters, Cathy and Mike, are standing on a frozen pond. Mike has twice the mass as Cathy. If Mike pushes to the left on Cathy, what can be said about the forces and accelerations on each person? A) Cathy experiences a force and acceleration to the left, while Mike experiences an equal force in the opposite direction....
Two forces are acting on an object F1: 13 N 57.5o F2: 23.5 N 12.3o Which...
Two forces are acting on an object F1: 13 N 57.5o F2: 23.5 N 12.3o Which of the following statements are true? Why? (select all that apply) A. The object could remain stationary B. The object could move with constant velocity C.The object would experience a net force D.The object would accelerate Suppose F1 in the problem above was rotated so that it pointed in exactly the opposite direction as F2. Assume F2 is unchanged in direction, and assume both...
Can someone help with 5-8? Please thanks 1. Your little sister wants a ride on her...
Can someone help with 5-8? Please thanks
1. Your little sister wants a ride on her sled. You agreed and moved the sled-sister combination by pulling it across a level ground with a force of F, at constant velocity of 0.5 m/s at an angle of 50 degrees with the horizontal. Assume that the sled-sister combination has a weight of 350 N and the coefficient of kinetic friction is 0.15. A) Draw a neat free-body diagram B) Calculate your force...
5) (10 pts) John is baby-sitting Casey, his 3-year old brother. He puts a crash helmet...
5) (10 pts) John is baby-sitting Casey, his 3-year old brother. He puts a crash helmet on Casey, places him in the red wagon and takes him on a stroll through the neighborhood. As John starts across the street, he exerts a 58 N forward force on the wagon. There is a 20 N resistance force (friction) and the wagon and Casey have a combined weight of 302 N. Construct a free body diagram showing all the forces acting upon...
need help with this whole problem 7. The block on the ramp shown is being pulled...
need help with this whole problem
7. The block on the ramp shown is being pulled using the rope shown. (i) For the x-y axes shownlnotone of yourown choosing), which choices best represent the x & y components of the force by the rope on the box? Circle the letter for ALL choices that apply. +x U) 刁 (i) What is the direction of the Force by the Earth on the Block? (b) (c)し (d) (ii) Which of the following...
Question 7 5 pts 7) Bob is pulling a wagon by applying a horizontal force, the only other horizonal force acting on the wagon is a frictional force of 20 N acting on the wagon. if Bob want to pull the wagon at a constant velocity, what horizonal force must Bob apply to the wagon? (Be careful, Canvas will not have the same order for the answers below!) Slightly larger than 20 N Significantly larger than 20 N Exactly 20...
4) Given the kinematic equation below solve for the acceleration à and determine the magnitude of the acceleration after time t - 3 seconds given the displacement vectors below. X=(+10 m )X + ( +7 m) =(+1 m )X+(-3 m) 5) Given the following displacement vectors and their resultant vector, determine the components that are missing. (A, B, and C.) A- ( A ) + (-8 m ) + ( 6 m )2 B = ( 10m 8+ ( B,...
6) Bob applies a force with a magnitude of F = 160 N to a box downward at an angle = 60° relative to the horizontal, the box has a weight of 196 N and there is a frictional force of 80 N acting on the box. Which statement best describes the motion of the crate? (Be careful Canvas my not have the same order for the answers) The crate must be at rest. The crate must be moving with...
5) Little Bobby is pushing a cart and the cart starts to slow down, which free body diagram below is correct for the cart slowing down as Little Bobby continues to pushes. A) F FN F D) FN F applied F applied applied F applied 6) Bob applies a force with a magnitude of |F = 160 N to a box downward at an angle = 60° relative to the horizontal, the box has a weight of 196 N and...
13) Mike (mMike = 100 kg) is motionless on a frictionless frozen lake with only a tool box (Mont = 20 kg), in order for Mike to get off the ice he pushes on the tool box with a force of 20 N, what is the accelerations of Mike while he is pushing and in what direction does he move? Mike Tool + X 14) If Cathy is in her car and the car experiences a constant acceleration, which statement...
1) Which term best describes an object's resistance to a change in motion A) Force B) Inertia C) Acceleration D) Resistance 2) Two skaters, Cathy and Mike, are standing on a frozen pond. Mike has twice the mass as Cathy. If Mike pushes to the left on Cathy, what can be said about the forces and accelerations on each person? A) Cathy experiences a force and acceleration to the left, while Mike experiences an equal force in the opposite direction....
Can someone help with 5-8? Please thanks
1. Your little sister wants a ride on her sled. You agreed and moved the sled-sister combination by pulling it across a level ground with a force of F, at constant velocity of 0.5 m/s at an angle of 50 degrees with the horizontal. Assume that the sled-sister combination has a weight of 350 N and the coefficient of kinetic friction is 0.15. A) Draw a neat free-body diagram B) Calculate your force...
5) (10 pts) John is baby-sitting Casey, his 3-year old brother. He puts a crash helmet on Casey, places him in the red wagon and takes him on a stroll through the neighborhood. As John starts across the street, he exerts a 58 N forward force on the wagon. There is a 20 N resistance force (friction) and the wagon and Casey have a combined weight of 302 N. Construct a free body diagram showing all the forces acting upon...
need help with this whole problem
7. The block on the ramp shown is being pulled using the rope shown. (i) For the x-y axes shownlnotone of yourown choosing), which choices best represent the x & y components of the force by the rope on the box? Circle the letter for ALL choices that apply. +x U) 刁 (i) What is the direction of the Force by the Earth on the Block? (b) (c)し (d) (ii) Which of the following...
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