". VdoTips: PHYSICS PRACTICE SET 1

PHYSICS PRACTICE SET 1

1 Rate of change of displacement is called
(A) Speed
(C) acceleration
(B) Velocity
(D) deceleration


2 Acceleration is a vector quantity, which indicates that its value
(A) Can be positive, negative or zero
(C) Is always positive
(B) Is always negative
(D) Is zero


3 A man travels a distance of 20 km from his home to office, and 10 km towards his house back. Then the displacement covered by the man in the whole trip is
(A) 30 km
(C) 10 km
(B) zero km
(D) 50 km


4 A farmer moves along the boundary of a square field of side 10 m in 40 se
(C)The magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position is
(A) 10m
(C) 40m
(B) 30m
(D) 10√2m


5 An object travels 20m in 5 sec and then another 40m in 5 se
(C) What is the average speed of the object?
(A) 12m/s
(C) 2m/s
(B) 6m/s
(D) 0 m/s