Question

14. The velocity of an object changes from 20 m/s to 10 m/s in 2 seconds while moving up along
incline plane. What is its acceleration ?


pls help me ​

Answer 1

Acceleration==>v-u/t

==> 20-10/2

==> 10/2= 5 m/s^2

Answer 2

Answer:

acceleration = dv/dt

= 10-20 / 2-0

= -10/2

= -5 ms^-2

the object undergoes retardation

the magnitude of acceleration = 5 ms^-2