PRACTICE QUIZ 4A

(Everything in chapter 4 is fair game except for acceleration due to gravity.)

Answer the following.  Show all work and circle your answers.

1. Describe in detail how a driver might accelerate a car.

2.   Describe in a word or two the velocity of a toy train moving along a straight track during each time interval using the graph on the right. a. 0 to 5 s b. 5 to 10 s c. 10 to 15 s d. 15 to 20 s e. 20 to 25 s f. 25 to 30 s g. 30 to 35 s h. 35 to 40 s

3. According to the graph in #2, what is the average acceleration of the toy train from…

a. 0 s to 5 s?

b. 5 to 15 s?

c. 15 to 30 s?

4. From the moment a 40 m/s fastball touches the catcher's mitt until it is completely stopped takes 0.012 s. Calculate the average acceleration of the ball as it is being caught.

5. A motorcycle traveling at 16 m/s accelerates at a constant rate of 4.0 m/s² over 50 m. What is its final velocity?

6. A car traveling at 14 m/s encounters a patch of ice and takes 5.0 s to stop. What is the car's constant acceleration? How far does the car travel before stopping?

7. A bullet accelerates uniformly at 6.8 x 10⁴ m/s² from rest as it travels the 0.80 m of the rifle barrel. Calculate the time the bullet spends in the barrel during acceleration.