Two particles A and B having different masses are projected from a tower with same speed. A is project vertically upward and B vertically downward. On reaching the ground

A body starts from rest is accelerated uniformly for 30s. If x1, x2, x3 are the distances travelled in first 10s; next 10s and last 10s respectively, then x1 : x2 : x3 is

In the above graph what is the value of acceleration? 

When do we say that a body is retarding or decelerating?

State whether the following situation is possible and give an example for it: An object with a constant acceleration but with zero velocity.

What do you mean by $5 \mathrm{m} {\mathrm{s}}^{-2}$?

Can we use equations of motion for motion having variable acceleration?

State which of the following situations are possible and give an example for each of these:

An object with a constant acceleration but with zero velocity.

State whether the following situation is possible or not and give an example for the case.

An object with a constant acceleration but with zero velocity.

Equations of motion are used for uniformly accelerated motion only. Comment​

Can be a body be accelerated, if it is moving with constant speed?

Define acceleration.