Question

an object is moving up an incline plane. Its velocity changes from 15m/s to 10m/s in two seconds. What is its acceleration

Answer 1

Initial velocity of object (u) = 15m/s

Final velocity of object (v) = 10 m/s

Time taken (t) = 2 seconds

As, we know formula for acceleration is -

(v-u)/t

So, Acceleration = (10-15)/2

= -5/2

= -2.5 m/s²

Answer) Acceleration of body is -2.5 m/s²

Answer 2

Initial velocity of the object = 15 m / s.

Final velocity of the object = 10 m / s.

Time taken to cover the plane = 2 seconds.

Since , Acceleration = Change in velocity / time.

i.e. v - u / t.

Therefore , 10 - 15 / 2 = - 5 / 2

= - 2.5 ms ^ 2 will be the acceleration.

HOPE IT HELPED.. :))