Question

John's velocity decreased from 16 m/s to 8 m/s in 2 seconds. His acceleration is

Answer 1

Answer:

Explanation:

From the three kinematic equations,

v = u + at [v,u,a and t represent final, initial velocities, acceleration and time]

16 = 8 + a(2)

8 = 2a

a = 4 $m/s^{2}$

Answer 2

Explanation:

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initial velocity = 16m/s

FINAL VELOCITY = 8m/s

time = 2s

acceleration = v-u/t

=16 -8/2 = 4m/s^2

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