A particle is moving in a circular path of radius r. The displacement after half a circle would be _______.

(a)

Zero

(b)

R

(c)

2 r

(d)

r / 2

From the given v-t graph it can be inferred that the object is _______.

(a)

in uniform motion

(b)

at rest

(c)

in non uniform motion

(d)

moving with uniform acceleration

Which of the following figures represent uniform motion of a moving object correctly?

(a)

(b)

(c)

(d)

Suppose a boy is enjoying a ride on a marry go round which is moving with a constant speed of 10 m/s. It implies that the boy _______.

(a)

at rest

(b)

moving with no acceleration

(c)

in accelerated motion

(d)

moving with uniform velocity

What is one way you might increase the stability of an object?

(a)

lower the centre of gravity

(b)

raise the centre of gravity

(c)

increase the height of the object

(d)

shorten the base of the object