Question

1. A runner starts at rest and accelerates uniformly at a rate of 0.85 m/s2
. What is the runner’s
velocity after the runner has traveled 6.0 m?
A. 2.3 m/s
B. 3.2 m/s
C. 5.1 m/s
D. 10.2 m/s

2. An official drag race in the United States is usually 1/4 mile long, which is 402 m. If a car
undergoes constant acceleration and requires 9.50 s to cross the finish line, what is the average
acceleration of the car?
A. 4.45 m/s2
B. 8.91 m/s2
C. 42.3 m/s2
D. 84.6 m/s2

3. Suppose you throw a ball straight upward. Ignoring air resistance, from the instant the ball
leaves your hand, its
A. velocity increases and then decreases.
B. acceleration decreases steadily.
C. acceleration is constant and its velocity decreases.
D. acceleration is constant and its velocity increases.


4. A student uses a model catapult to launch an apple with an initial upward velocity of 52 m/s.
Ignoring the effects of air resistance, what is the velocity of the apple after 4.5 s?
A. 52 m/s
B. 96 m/s
C. 7.9 m/s
D. -44 m/s

Answer 1

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