10. A car is slowing down from the initial velocity of 19.3 m/s to 6.3 m/s. It took the car 5.2 seconds to slow down. What was the acceleration? 11. An object flies through the room with a velocity of 5.3 m/s and takes 6 seconds to hit the wall. What was the acceleration?

10. A car is slowing down from the initial velocity of 19.3 m/s to 6.3 m/s. It took the car 5.2 seconds to slow down. What was the acceleration? 11. An object flies through the room with a velocity of 5.3 m/s and takes 6 seconds to hit the wall. What was the acceleration?

Name: 10 and 11 10. A car is slowing down from the initial velocity of 19.3
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Description: 10 and 11 10. A car is slowing down from the initial velocity of 19.3 m/s to 6.3 m/s. It took the car 5.2 seconds to slowdown. What was the acceleration?11. An object flies through the room with a velocity of 5.3 m/s and takes 6 seconds to hit the wa

Inquiry into Physics

8th Edition

ISBN:9781337515863

Author:Ostdiek

Publisher:Ostdiek

Chapter1: The Study Of Motion

Section: Chapter Questions

Problem 7C

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1. New York to San Francisco. It travels at an average speed of 500 miles per hour. What is the distance between the two cities? 2. A Truck is moving from rest and attained a velocity of 80 m/s. Calculate the acceleration of the Truck after 5 s? 3. A Marble is dropped from the top of a building. After 2 seconds, it’s velocity is measured to be 19.6 m/s. Calculate the acceleration for the dropped marble 4. A canonis fired with amuzzle velocityof 300m/s at an angle of 600 what is its range?.
2. The graph shows the x-velocity of a very slow industrial robot as a function of time. a. What is the x-acceleration at t = 5 s? b. What is the x-acceleration at t = 20 s? c. That is c. What is the x-acceleration at t = 27 s? Vx (cm/s) 60 40 20 0 -20 -40 0 x-velocity vs. time 5 10 15 20 25 30 time (sec) d. During the first interval from 0 to 10 s, the acceleration is constant, and we know that x = x + VoxAt + ax(At)² while vx = Vox + ax^t. Here x, and vox are the x-position and x-velocity at the beginning of the constant acceleration interval and At is the time from the beginning of the constant acceleration interval. i. Write an expression for the x-position as a function of time t for the first interval, i.e., for 0 < t < 10 s. Your expression should only contain the variablet and the correct values (with units) of the constants xo, Vox, and a. Assume x = 0 at t = 0.
7. A car starts from rest and attains a speed of 47 m/s in 12 seconds. How far has the car travelled in 12 seconds? 8. Michael is driving his sports car at 20 m/s when he sees a dog on the road ahead. He slams on the brakes and comes to a stop in 5 seconds. What was the acceleration of Michael's car?
5. A car with an initial velocity of 9_ m/s, accelerates at a constant rate of 3.6 m/s?. a. How much time is required for it to travel 300 meters? b. What is its velocity (in m/s) upon reaching 300 meters?
6. A pitcher takes 0.10 s to throw a baseball, which leaves his hand with a velocity of 30 m/s. The ball’s acceleration during the throw was _________. a. 300 m/s^2 b. 30 m/s^2 c. 3000 m/s^2 d. 3 m/s^2 Explanation and solution
24. A soccer ball accelerates from rest and rolls 6.5 m down a hill in 3.1 s. It then bumps into a tree. What is the speed of the ball just before it hits the tree? 25. Challenge As you ride a bicycle on the sidewalk with a speed of 6.4 m/s, a ball suddenly rolls out in front of you. You hit the brakes and come to rest in 3.8 m. How much time does it take you to stop?
7. A feather is dropped on the moon from a height of 1.40 meters. The acceleration of gravity on the moon is 1.67 m/s?. Determine the time for the feather to fall to the surface of the moon. a. 2.29 s b. 1.29 s. c. 1.29 m d. 0.29 s. a C d
4. This table shows the speed of a car. Time (s) 0 10 20 30 40 50 60 70 Speed (m/s) 27 36 40 36 27 169 3 a. Show the speed on a graph. b. Draw a tangent to estimate the acceleration after 10 seconds. c. Estimate the acceleration 0? d. Estimate the deceleration after 1 minute.