(a) Work, Energy and Power - Jamb Physics Past Questions and Answers

Question 51:

• JAMB 2013

If a pump is capable of lifting 5000kg of water through a vertical height of 60m in 15 min, the power of the pump is

A. 2.2.5 x 10 ⁵js^-1
B. 2.5 x 10⁴js^-1
C. 3.3 x 10³js^-1
D. 3.3 x 10²js^-1

Question 52:

• JAMB 2013

Calculate the work done when a force of 20N stretches a spring by 50mm.

A. 0.5J
B. 1.5J
C. 2.0J
D. 2.5J

Question 53:

• JAMB 2013

A gas at a pressure of 10⁵Nm^-2expands from 0.6m^-3 to 1.2m³ at constant temperature, the work done is

A. 7.0 x 10⁶J
B. 6.0 x 10 ⁶J
C. 6.0 x 10 ⁵J
D. 6.0 x 10 ⁴J

Question 54:

• JAMB 2014

An object of mass 20kg is released from a height of 10m above the ground level. The kinetic energy of the object just before it hits the ground is

A. 200J
B. 4000J
C. 2000J
D. 500J

Question 55:

• JAMB 2015

If an object is placed at a height of tem above the ground at a stationary point. It posses what types of energy?

A. Mechanical energy
B. Stationary energy
C. Potential energy
D. Vibrational energy