,
, Physics 100 Practice Midterm
50 Questions & Answers (Mechanics)
Kinematics (Questions 1–10)
1. A car accelerates uniformly from rest at 2.0 m/s². How far does it
travel in 5.0 s?
Answer: 25 m
(x = ½at²)
2. An object moves with constant velocity of 12 m/s. What is its
acceleration?
Answer: 0 m/s²
3. A ball is thrown straight upward at 20 m/s. What is its velocity at the
top?
Answer: 0 m/s
4. How long does it take the ball in Q3 to reach the top? (g = 9.8 m/s²)
Answer: 2.04 s
(t = v₀ / g)
5. An object falls from rest. How fast is it moving after 3.0 s?
Answer: 29.4 m/s downward
6. What is the displacement of the falling object in Q5?
Answer: 44.1 m
7. A cyclist travels 100 m east then 100 m west. What is the
displacement?
Answer: 0 m
8. Average velocity equals displacement divided by:
Answer: Total time