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Monday, 17 August 2026
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Physics Past Questions and Answers

Topic: Projectiles

Jamb Physics Questions - Projectiles

Question 16:
A ball of mass 0.1kg is thrown vertically upwards with a speed of 10ms-1 from the top of a tower 10m high. Neglecting air resistance, its total energy just before hitting the ground is
(take g = 10ms-2)
  • A 5 J
  • B 10 J
  • C 15 J
  • D 20 J
View Answer & Explanation
Question 17:
A stone of mass 1kg is dropped from a height of 10m above the ground and falls freely under gravity. Its kinetic energy 5m above the ground is then equal to
  • A Its kinetic energy on the ground
  • B Twice its initial potential energy
  • C Its initial potential energy
  • D Half its initial potential energy
View Answer & Explanation
Question 18:
An object is projected for the hieght of 80 m above the ground with a velocity of 40ms-1 at the angle of 30° to the horizontal. The time of flight
  • A 8 s
  • B 4 s
  • C 16 s
  • D 10 s
View Answer & Explanation
Question 19:
A shooter wants to fire a bullet in such a way that its horizontal range is equal to three times its maximum height. At the what angle should he fire the bullet to achieve this?
  • A 68<sup style='font-size: smaller;'>o</sup>
  • B 53<sup style='font-size: smaller;'>o</sup>
  • C 30<sup style='font-size: smaller;'>o</sup>
  • D 45<sup style='font-size: smaller;'>o</sup>
View Answer & Explanation
Question 20:
A bullet fired vertically from upward from a gun held 2.0 m above the ground reaches its maximum height in 4.0s. calculate its initial velocity.
[g = 10ms-2]
  • A 10 ms<sup style='font-size: smaller;'>-1</sup>
  • B 8 ms<sup style='font-size: smaller;'>-1</sup>
  • C 40 ms<sup style='font-size: smaller;'>-1</sup>
  • D 20 ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation