Motion - Jamb Physics Past Questions and Answers

Question 86:

• JAMB 1998

The tendon in a man's leg is 0.01m long. If a force of 5N stretches the tendon by 2.0 x 10^-5m, calculate the strain on the muscle.

A. 5 x 10⁶
B. 5 x 10²
C. 2 x 10^-3
D. 2 x 10^-7

Question 87:

• JAMB 1998

A body on the ground is acted on by a force of 10N at a point P as shown in the fig above. What force is needed to stop the body from moving eastwards

A. 5N in the direction of east
B. 5N in the diretion of west
C. 5V3N in the direction of west
D. 10N in the southwest direction

Question 88:

• JAMB 1999

Particles of mass 10^-2kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad-1. If the radius of the blade is 0.2m, the centripetal force is

A. 2 N
B. 20 N
C. 200 N
D. 400 N

Question 89:

• JAMB 1999

A lead bullet of mass 0.05kg is fired with a velocity of 200ms\(^{-1}\) into a lead block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is

A. 50 J
B. 100 J
C. 150 J
D. 200 J

Question 90:

• JAMB 1999

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