Class: AP Physics

Sheet 1

Class Work Today

1. Is it possible to move with constant speed but not constant velocity? Is it possible to move with constant velocity but not constant velocity but not constant speed? Answer and Explain

2. A car is traveling in a straight line along a highway at a constant speed of 80 mph for 10 seconds. Find its acceleration

3. A car is traveling along a straight highway at a speed of 20 m/s. The driver steps on the gas pedal and, 3 seconds later, the car’s speed is 32 m/s. Find the average acceleration.

4. Spotting a police car ahead, the driver of the car in the previous example slows from 32 m/s to 20 m/s in 2 seconds. Find the car’s average acceleration.

5. A flower pot falls off a window sill and past another window directly below. it takes 0.40 s to pass the lower window, which is 2.0 m high. How far is the top of the window below the sill of the window above?

Homework Below:

6. A stone is dropped from the top of a tall cliff (with zero initial speed), and 1.00 s later a second stone is thrown vertically downward with a speed of 16.0 m/s. How far below the top of the cliff will the second stone overtake the first?

7 A celebrated jumping frog jumps vertically upward. It has a speed of 3.46 m/s when it reaches one-half its maximum height.

a. How much does it rise?

b. What are its velocity and acceleration 0.750 s after it jumps?