Question

please explain about velocity and acceleration. (class IX) ​

Answer 1

Answer:

Acceleration: It is a measure of the change in the velocity of an object per unit time. Acceleration can be caused either by change in direction of motion or change in speed or both.

Answer 2

Answer:

1) Velocity is the rate of change of position with respect to time, whereas acceleration is the rate of change of velocity.

2) Both are vector quantities (and so also have a specified direction)

3) But the units of velocity are meters per second while the units of acceleration are meters per second squared.

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