Physics Practice Test – Fundamentals of Motion (Motion Under Gravity – Questions with Answers and Explanations)

A particle is projected vertically upward from the ground with speed 30 ms^-1. Calculate the time(s) taken for the particle to attain a height of 40m above the ground. [Take g = 10ms^-2] (WASSCE 2016 FM)

A. 1 s
B. 2 s
C. 3 s
D. 4 s

An object is projected vertically upwards. Its height, h(m), at time t seconds is given by h = 20t –  t² -  t³. Find the time at which it is momentarily at rest.

A. 2 ½  s
B. 2 s
C. 3 ½  s
D. 4 ½ s

An object is thrown vertically upwards from top of a cliff with a velocity of 25 ms^-1. Find the times in seconds, when it is 20 meters above the cliff. [Take g = 10 ms^-2] (WASSCE 2013 FM)

A. 0 and 1
B. 0 and 4
C. 0 and 5
D. 1 and 4

A particle is projected vertically upwards from a height 45 metres above the ground with a velocity of 40 ms^-1. How long does it take to hit the ground [Take g = 10ms^-2] (WASSCE 2006 FM)

A. 1 s
B. 3 s
C. 7 s
D. 9 s

A particle is projected vertically upwards from a height of 45 metres above the ground with a velocity of 40 ms^-1. How long does ¡t take to hit the ground? [Take g = 10 ms^-2] (WASSCE FM 2006)

A. 1 s
B. 3 s
C. 7 s
D. 9 s