Consider that you have a toy car that goes at a uniform “average” speed of 5.0 ± 0.05 m/s (as given by the manufacturer). You set up a straight track that you measure to be 2.00 ±0.05 m and using a stop watch you find that it takes 0.41 ± 0.01s to go this distance.

b)value given by manufacturer is more than the calculated value, when we divide or multiply two values with uncertainty, it will add up so that 0.05+0.05=0.1.
Consider that you have a toy car that goes at a uniform “average” speed of 5.0...
2) Playing with your younger sibling's toy car (m- 32g), you notice that if you launch it with an initial velocity of 1.5m/s along the ground, it takes 6ft before the car comes to a stop due to rolling friction and drag. You want to see if you can make it stop faster without touching it, so you apply a uniform electric field of magnitude 9,100N/C pointing to the left to the area in which you're testing the car, and...
2. Suppose a car travels 108 km at a speed of 20.0 m/s, and uses
2.20 gallons of gasoline. Only 30% of the gasoline goes into useful
work by the force that keeps the car moving at constant speed
despite friction. (The energy content of gasoline is 1.3 ✕
108 J per gallon.)
(a) What is the force exerted to keep the car moving at constant
speed?
N
(b) If the required force is directly proportional to speed, how
many...
A spring-gun projects a small rock from the ground with speed
v0 at an angle ?0 above the ground. You have been
asked to determine v0. From the way the spring-gun is
constructed, you know that to a good approximation v0 is
independent of the launch angle. You go to a level, open field,
select a launch angle, and measure the horizontal distance the rock
travels. You use g = 9.80 m/s2 and ignore the small height
of the end...
6) An auto manufacturer advertises that their car can go "from zero to sixty in eight seconds." This is a description of what characteristic of the car's motion? A) instantaneous speed B) displacement C) average speed D) instantaneous acceleration E) average acceleration 7) A light-year is the distance that light travels in one year. The speed of light is 3.00 x 108 m/s. How many miles are there in one light-year? (1 mi = 1609 m, 1 y = 365...
You measure the length of a board with a ruler that is older and has a worn-down end. If you align the end of the board with the end of the ruler, what type of uncertainty does the end of the ruler contribute to the measurement? A) Random B) Systematic The average height of children in kindergarten in Winnipeg is found by measuring the height of one randomly-selected child in every kindergarten class in the city. What type of uncertainty...
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Only calculate the speed of the segment A, B, C
suddenly you sawa s later you heard the air is about 340 m/s us system can prop- stimate the time it Time, t (s) ur finger touches a FIGURE 2-25 Problem 23 per hour s tortoise, which r 1.2 minutes the flight in the same hat was the aver- val? 24. . The position of a particle as a function of time is given by x (-5 m/s)t +...
I need help in this lab report, I am struggling, Please
help, its urgent,
You can select data of your choice, like supposed data
PURPOSE: To calculate the acceleration due to gravity at the Earth's surface by measurement of the total distance an object falls and the time required to fall that distance. EQUIPMENT:1 tape measure or similar device 1 table tennis (Ping-Pong) ball 1 stopwatch EQUATIONS where v is the average velocity of the object, h is the height...
Start the Sound (uses Java) simulation (opens in a new window). Select the Measure" tab at the top left corner of your simulation window. Set the frequency to 200 Hz (once you click on the frequency button you can use the left and right arrow keys on your keyboard to decrease/increase the frequency to the desired value). Also set the amplitude to maximum. The waves are very now well defined. Pause the simulation. There are two blue lines that you...
Dr. C. #2. (PHYS 121 engineering design exercise) You have seen why cars inherently accelerate quicker in a straight line and have better fuel mileage than an SUV with the same engine; it's because of air drag and the smaller frontal area and better drag coefficient of the car. Now let's think about why cars handle (take turns, change lanes and make other quick maneuvers) better than an SUV. We'l1 simplify our analysis by considering a vehicle of mass M...
Additional info:
Meal = 1720 Kilocalories
Mass of myself = 50 kg
The Joule () is the SI unit of energy. (J = kg:m? S2 A calorie is another unit of energy. The definition of a calorie is the amount of heat (energy) necessary to raise the temperature of Ig of water by 1° Celsius. Ig of water occupies 1 milliliter (ml) = 1 cubic centimeter (cm) of volume. lkcal=4186J Energy comes in many forms and energy may be converted...