Jamb Physics 1998 Past Questions and Answers

Question 6:

• JAMB 1998

In free fall, a body of mass 1kg drops from a height of 125m from rest in 5s. How long will it take another body of mass 2kg to fall from rest from the same height? [g = 10ms^-1·]

A. 5s
B. 10s
C. 12s
D. 15s

Question 7:

• JAMB 1998

A ball of mass 0.15kg is kicked against a rigid vertical wall with a horizontal velocity of 50ms^-1. If it rebounced with a horizontal velocity of 30ms^-1, Calculate the impulse of the ball on the ball · ·

A. 3.0Ns
B. 4.5Ns
C. 7.5Ns
D. 12.0Ns

Question 8:

• JAMB 1998

The force of attraction between two point masses is 10^-4N when the distance between them is 0.18m. If the distance is reduced to 0.06m, calculate the force.

A. 1.1 x 10^-5N
B. 3.3 x 10^-5N
C. 3.0 x 10^-4N
D. 9.0 x 10^-4N

Question 9:

• JAMB 1998

A uniform meter rule weighing 0.5N is to be pivoted on a knife-edge at the 30cm-mark. where will a force of 2N be placed from the pivot to balance the meter rule?

A. 95cm
B. 25cm
C. 20cm
D. 5cm

Question 10:

• JAMB 1998

A man whose mass is 80kg climbs a staircase in 20s and expends power of 120W. Find the height of the staircase.[g = 10ms^-2]

A. 1.8m
B. 2.0m
C. 2.5m
D. 3.0m