Question

A car travelling 72km/hr deccelerates uninformly at2m/s^2.calculate ​

Answer 1

Answer:

v=u+atv=u+at

0=20+(−2)t0=20+(−2)t

−20=−2t−20=−2t

t=10seconds.

v2=u2+2axv2=u2+2ax

(0)2=(20)2+2(−2)x(0)2=(20)2+2(−2)x

0=400−4x0=400−4x

−400=−4x−400=−4x

x=100metres.

Explanation:

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