Question

what is Acceleration ?please give answer in easy language​

Answer 1

Answer:

In mechanics, acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.

Explanation:

Hope this helps!!

Answer 2

Direct Answer :

Acceleration is the rate of change in velocity or change in velocity with time.

Detailed Answer :

• Acceleration is the rate of change in velocity.

• It is denoted by a.

Rate of change in velocity is the change in velocity with time, so:

$\longmapsto \rm {a = \dfrac{Change \; in \; velocity}{Time} }$

Here, change in velocity will be the difference of initial and the final velocity. Thus,

$\bigstar \underline{\boxed{\rm {a = \dfrac{v -u}{t} } }}$

» a denotes acceleration

» v denotes final velocity

» u denotes initial velocity

» t denotes time

• Its SI unit is m/s².

• It is a vector quantity i.e, it has both magnitude and direction.

• Negative acceleration is called retardation or retardation is the acceleration with negative sign.

• Negative acceleration is also called deceleration or retardation.

• Uniform acceleration is the acceleration when the body's velocity changes at a uniform rate.

• Non-uniform acceleration is the acceleration the body's when velocity is increased at a non-uniform rate.

• Velocity-time graph of a body having uniform acceleration is a straight line.

• Velocity-time graph of a body having non-uniform acceleration is a curved line.