Work, Energy and Power - Jamb Physics Past Questions and Answers

Question 41:

• JAMB 2018

A lead bullet of mass 0.05 kg is fired with a velocity of 200 m/s into a lead block of mass 0.95 kg. Given that the lead block can move freely, the final kinetic energy after impact is

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

Question 42:

• JAMB 2018

To keep a vehicle moving at a constant speed V requires power P from the engine. The force provided by the engine is

A. \(\frac{P}{v}\)
B. (\(\frac{1}{2}\))V
C. PV
D. \(\frac{P}{V^2}\)

Question 43:

• JAMB 2019

A projectile of mass 4kg is fired vertically and reaches a maximum height of 1m. Calculate the potential energy at the highest point
(g = 10ms\(^{-2}\)

A. 1800J
B. 1600J
C. 600J
D. 440J

Question 44:

• JAMB 2019

The equilibrium position of objects in any field corresponds to situation of

A. Equipotential energy
B. Maximum potential energy
C. Minimum potential energy
D. Maximum kinetic energy

Question 45:

• JAMB 2021

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

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