Grade 9 Physics - Motion
2 & 3 Mark Questions with Answers
DISTANCE AND DISPLACEMENT
1.Define distance and displacement.
Distance is the total path travelled by an object.
Displacement is the shortest distance from initial to final position with
direction.
2.Give two differences between distance and displacement.
Distance is a scalar quantity and has no direction, while displacement is
a vector quantity and has direction.
Distance is always positive, but displacement can be zero or positive.
3.When is displacement zero?
Displacement is zero when the initial and final positions are the same.
SPEED
4.Define speed. Write its formula.
Speed is the distance travelled per unit time.
Formula: Speed = Distance / Time
5.What is uniform speed?
A body has uniform speed if it covers equal distances in equal intervals
of time.
6.What is average speed?
Average speed is total distance divided by total time.
Formula: Average Speed = Total Distance / Total Time
2 & 3 Mark Questions with Answers
DISTANCE AND DISPLACEMENT
1.Define distance and displacement.
Distance is the total path travelled by an object.
Displacement is the shortest distance from initial to final position with
direction.
2.Give two differences between distance and displacement.
Distance is a scalar quantity and has no direction, while displacement is
a vector quantity and has direction.
Distance is always positive, but displacement can be zero or positive.
3.When is displacement zero?
Displacement is zero when the initial and final positions are the same.
SPEED
4.Define speed. Write its formula.
Speed is the distance travelled per unit time.
Formula: Speed = Distance / Time
5.What is uniform speed?
A body has uniform speed if it covers equal distances in equal intervals
of time.
6.What is average speed?
Average speed is total distance divided by total time.
Formula: Average Speed = Total Distance / Total Time
