WAEC Physics Past Questions & Answers - Page 95

471.

A resultant force of magnitude 15N acts on a body of mass 250g. Calculate the magnitude of the acceleration

A.

0.06 ms-2

B.

3.75ms-2

C.

16.67ms-2

D.

60.00ms-2

Correct answer is D

a = \(\frac{F}{M} = \frac{15}{0.25} = 60\)

472.

The tendency for a stationary body to continue to remain at rest when a force is applied to it is known as

A.

friction

B.

impulse

C.

inertia

D.

momentum

Correct answer is C

No explanation has been provided for this answer.

473.

A simple pendulum makes 50 oscillations in one minute. Determine its period of oscillation

A.

0.02s

B.

0.83s

C.

1.20s

D.

50.00s

Correct answer is C

T = \(\frac{t}{n} = \frac{60}{50} = 1.2\)

474.

When a body is slightly tilted, it is found that its centre of gravity is slightly raised. What is the state of equilibrium of the body?

A.

unstable

B.

stable

C.

neutral

D.

cannot be determined

Correct answer is B

No explanation has been provided for this answer.