Answer:
8.975 m/
Step-by-step explanation:
Travel starting velocity (u) = 34.8 m/s
Achieved (final) velocity = 214.3 m/s
Travelling time(t) = 20 s
we know that, v =u +at
; where v= final velocity
u=start velocity
a=acceleration
t=time
Therefore,
His acceleration, a = (v-u)/t
=(214.3-34.8)/20
= 8.975 m/