Question

When is an acceleration of a body positive? Explain with an example.

Answer 1

Answer:

acceleration = change in velocity divided by change in time

so time is never negative so the acceleration depends on velocity

SO IF DIRECTION OF VELOCITY IS POSITIVE THEN THE ACCELERATION IS ALSO POSTIVE

HOPE IT HELPS.

Answer 2

the objects move in positive direction and speeding up.

• u=initial position,
• v =final position

u‐----------v