Question

please answer...........​

Answer 1

Explanation:

a) The rate of change of velocity in unit time is known as acceleration.

b) v=20m/s

u=4m/s

t=4s

a=v-u/t

=20-4/4

=16/4

a =4m/s^2

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Answer 2

Answer:

a.Acceleration can be defined as the rate of change of velocity

b.4m/s^2

Explanation:

Given that

initial velocity,u=4m/s

final velocity,v=20m/s

t=4s

Acceleration=v-u/t

=20-4/4

=4m/s^2