Motion - Jamb Physics Past Questions and Answers

Question 16:

• JAMB 1981

Two particles X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. the ratio of the time taken by X to that taken by Y is

A. \(\frac{1}{2}\)
B. \(\frac{1}{\sqrt2}\)
C. \(\frac{1}{\sqrt2}\)
D. \(\sqrt 2\)
E. 4

Question 17:

• JAMB 1981

The relationship between the period T and the length T of a smile pendulum is T = 2\( \pi \) \( ( \frac{I}{g}) ^{ \frac{1}{2} } \). From experiment data of T and I, one can obtain the following graphs, i. T vs.I ii. T vs I² iii. T² vs. I iv. T vs \( \sqrt{I} \) v. logT vs logI. Which of the following graphs, are linear?

A. All
B. Only i and ii
C. Only iii and iv
D. Iii,iv and v
E. None of them

Question 18:

• JAMB 1982

The force responsible for holding the moon in its orbit around the earth against the gravitational pull of the earth is

A. Centrifugal
B. Rotational
C. Reaction
D. Centripetal
E. Tractional

Question 19:

• JAMB 1982

A mango fruit drops from a branch 10m above the ground, just before hitting the ground its velocity is (g = 10ms^-2)

A. 10√2ms^-1
B. 10ms^-1
C. 100ms^-1
D. 5√2ms^-1
E. 200ms^-1

Question 20:

• JAMB 1982

A rocket burns 0.01kg of fuel each second and ejects it as a gas with a velocity of 5,000m/s. What force does the gas exert on the rocket?

A. 500,000N
B. 500N
C. 50N
D. 5,000N
E. 50,000N