Question

a motorcycle moving the velocity of 90 km per hour and its take 4 second to stop .calculate the force exerted by the break Aplying on the motor cycle if it's mass along with passenger 1000kg

Answer 1

$Here \: is \: the \: answer \: of \: your \: question$

According to question we have given,

u = 90 km/h
90 x 5/18 = 25 m/s

t = 4 sec

m = 1000 kg

v = 0 m/s

a = ?

F = ?

Now, we have to use formula,

v = u + at [ to find a]

Put the values given above in the formula

0 = 25 + a (4)

- 4a = 25

a = - 25/4

a = - 6.25

Now,

F = ma

= 1000 ( - 6.25 )

= - 6250 N