1998 - JAMB Physics Past Questions and Answers - page 1

A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 10³N, calculate the speed of the bullet just before it hits the wooden block.

The velocity of a sound wave at 27^oC is 360ms^-1. Its velocity at 127^oC is

The physical quantity that has the same dimensions as impulse is

A ball is moving at 18ms^-1 in a direction inclined at 60^o to the horizontal. The horizontal component to its velocity is

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 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 · ·

    = 0.15(80-50)<br />

    = 4.5N/s

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 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 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 parachute attains a terminal velocity when