Projectile motion Quiz
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5 questions, one answer each
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1. A ball is thrown horizontally from a table 0.80 m high. What determines the time it takes to hit the floor?
- A. The horizontal launch speed
- B. The height of the table
- C. Both the launch speed and the height
- D. The mass of the ball
2. A projectile's horizontal velocity during flight (no air resistance) is
- A. constant
- B. increasing at 9.81 m s⁻²
- C. decreasing at 9.81 m s⁻²
- D. zero at the highest point
3. A ball is kicked at 25 m s⁻¹ at 40° above the horizontal. What is the initial vertical component of its velocity?
- A. 19 m s⁻¹
- B. 16 m s⁻¹
- C. 25 m s⁻¹
- D. 32 m s⁻¹
4. At the top of its flight, a projectile launched at an angle has
- A. zero velocity and zero acceleration
- B. zero vertical velocity and acceleration g downwards
- C. zero horizontal velocity and acceleration g downwards
- D. zero speed and acceleration g
5. A stone is thrown horizontally at 8.0 m s⁻¹ from a cliff and lands after 2.0 s. How far from the cliff base does it land?
- A. 16 m
- B. 8.0 m
- C. 20 m
- D. 39 m