WAEC Physics Past Questions & Answers - Page 209

1,041.

An inelastic collision takes place between balls of known masses. Just before the collision, one of the balls was moving with a known velocity while the other was stationary. Which of the following physical quantities can be determined from the information given?

A.

speed of each of the ball after collision

B.

kinetic energy of each ball after collision

C.

total momentum of the ball after collision

D.

total momentum of the two ball after collision

E.

mutual forces exerted by the balls

Correct answer is A

No explanation has been provided for this answer.

1,042.
1,043.

The bob of a simple pendulum takes 0.25s to swing from its equilibrium position to one extreme end. Calculate its period

A.

0.25s

B.

0.50s

C.

0.75s

D.

1.00s

Correct answer is D

No explanation has been provided for this answer.

1,044.

The resultant of two forces acting on an object is maximum when the angle between them is?

A.

180o

B.

90o

C.

45o

D.

0o

Correct answer is D

Resultant of two vector will be maximum when they are parallel

That angle between them as zero.