Question

Define acceleration and State its SI unit .For motion along a straight do we consider the acceleration is positive or negative​??

Answer 1

Acceleration is defined as Rate of change in Velocity. Its SI unit is m/s^2 (metre per second square ). When the velocity increases in a specific time period ,acc. is considered positive. When the velocity decreases in a specific time period ,acc. is considered negative.

Answer 2

Rate of change in Velocity of a body is said to be the Acceleration of that body.

SI Unit of Acceleration :- m/s²

For motion along a straight path , we consider Positive Acceleration

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