Question

the speed of a car has increased from rest to 25m/s in 5seconds. find the acceleration of a car​

Answer 1

Answer:

Velocity is vector quantity so direction matters.

v

i

=25m/s,v

f

=−25m/s.

Δv=(−25)−25=−50m/s

Average acceleration =

Δt

Δv

=

5

50

=10ms

−2

.

Answer 2

Answer:

acceleration=v-u/t

25-0/5

=25/5

=5m/s^2