A motorcycle is moving with a velocity of 90 km/hr and takes 5 sec to stop after the break is applied. calculate the force exerted by the brakes on the motorcycles, if its mass along with the rider 200km???

Given that:

u=90km/hr=25m/s

v=0 and t=5 sec

Now using the relation,

v=u+at

0=25+5a

a=

Now force F=ma=200 x (-5)=-1000 N

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