100+ Force and Motion Quiz with Answers - 1
What is a vector quantity?
A vector quantity is one which has both magnitude and direction. Example â€“ Displacement, Velocity, Acceleration, Force
Distinguish between speed and velocity?
Speed1. It is the distance travelled by an object in one second.
Speed = Distance travelled / Time
2. It is a scalar.
3. It does not have a direction.
Velocity 1. It is displacement of an object in one second.
Speed = Displacement / Time
2. It is a vector.
3. It has the direction of the displacement.
What is centripetal acceleration?
An object moving with a uniform speed in a circular path has an acceleration directed towards the centre of the circular path. This is called centripetal acceleration.
Define Instantaneous velocity?
The velocity of an object in motion at an instant or at a point is known as instantaneous velocity.
Define uniform velocity?
If an object has equal displacement in equal intervals of time, it is said to move with uniform velocity.
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