non-uniform motion

Question 1

what is acceleration?

Answer 1

a change in the motion of an object, which can be in speed or direction, therefore a change in velocity

Question 2

when does acceleration occur?

Answer 2

when the forces acting on an object are not balanced, resulting in a net force

Question 3

what direction is acceleration of an object in?

Answer 3

the direction of the net force

Question 4

how to calculate acceleration?

Answer 4

change in velocity = final velocity - initial velocity