Question

John throws his bowling ball towards the pins to knock them down. John knocks down all the pins. When his ball hits pins the pins travel at the same speed in different directions. In this situation do all the pins have the same velocity

Answer 1

No, the pins do not have the same velocity when they are knocked down.

Explanation:

Speed is a scalar quantity while Velocity is a vector quantity.

A scalar quantity has one component that is the magnitude of that quantity. A vector quantity on the other hand has two components. First is the magnitude  of the quantity and the second component is the direction.

Velocity is a vector quantity and it has two components; the magnitude which is the same as the speed and the direction.

In the given situation, the pins when knocked down have same speed but the direction is different. If one component of a vector quantity changes, the quantity is said to be different. We cannot say that two bodies moving with same speed in different directions have same velocities.

Keyword: Vector Quantity

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