Question

A motor cycle is being driven at a speed of 20 m/s when brakes are applied to bring it to rest in five seconds the deccerlation produced in case is?

Answer 1

u=20 m/s

v=0 m/s

t=5 sec

∴a= :

V=u+at

 0=20 + a×5

 -20=5a

 -20/5=a

∴a=-4 m/s²