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

Question 66:

• 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 67:

• 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 68:

• JAMB 2019

Workdone on an object to bring it to a certain point in space is called

A. Gravitational potential energy
B. Potential energy
C. Kinetic energy
D. Mechanical energy

Question 69:

• JAMB 2019

Which of the following statements is/are correct for a freely falling body?
I. the total is entirely kinetic
II. the ratio of potential energy to kinetic energy is constant
III. the sum of potential and kinetic energy is constant

A. I only
B. II only
C. III only
D. I & III only

Question 70:

• 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