High School Physics - Linear Motion

1

Suppose a recreational biker averages $8.05\frac{m}{s}$ on a twenty-mile ride, equal to . A professional biker has an average speed of $11.1\frac{m}{s}$ . The professional happens to be riding on the same path, but started behind the recreational biker. The two are both headed for the same destination. Who would reach the end of the path first, and how far behind would the other biker be?

2

Laura throws a ball vertically. She notices it reaches a maximum height of 10 meters. What was the initial velocity of the ball?

$\small g=-9.8\frac{m}{s^2}$

3

A tennis ball is thrown straight up and it is caught at the same height the person released the ball from their hand. Which of the following is false? Ignore air resistance.

4

A tennis ball is thrown straight up and it is caught at the same height the person released the ball from their hand. Which of the following is false? Ignore air resistance.

5

While traveling along a highway, a specific automobile is capable of an acceleration of about $1.6m/s^{2}$ . At this rate, how long does it take to accelerate from to ?

6

An athlete kicks a ball into the air. It travels $\small 42m$ and is in the air for $\small 4.5s$ . How fast must the athlete run from the point where he kicks the ball in order to catch it before it lands?

7

Suppose a recreational biker averages $8.05\frac{m}{s}$ on a twenty-mile ride, equal to . A professional biker has an average speed of $11.1\frac{m}{s}$ . The professional happens to be riding on the same path, but started behind the recreational biker. The two are both headed for the same destination. Who would reach the end of the path first, and how far behind would the other biker be?

8

A runner wants to complete a run in less than . After running at constant speed for exactly , the runner still has left to run. The runner must then accelerate at for how many seconds in order to reach a final velocity that will allow them to complete the left of the race in the desired time?

9

Leslie rolls a ball out of a window from above the ground, such that the initial y-velocity is zero. How long will it be before the ball hits the ground?