9th grade motion-1

Q1. What would be the displacement of a particle moving in a circular path of radius r after a displacement of half a circle?

• a) zero

• b) 2πr

• c) πr

• d) 2r

Q2. The path length travelled by a body in a given time interval

is known as _____.

• a) distance

• b) velocity

• c) acceleration

• d) speed

Q4. A body moving in a straight line has a uniform motion if it travels _____ distance in equal time intervals.

• a) unequal

• b) equal

• c) random

• d) all of these

Q3. Velocity is defined as _____ per time.

• a) distance

• b) acceleration

• c) displacement

• d) power

Q5. The physical quantity that has both magnitude and direction is

known as--------

• a) vector

• b) scalar

• c) both scalar and vector

• d) neither scalar nor vector