Math, asked by prahladjat52, 7 months ago

A motorcar is moving with a velocity of 108 km/h and it
takes 4 s to stop after the brakes are applied. Calculate the
force exerted by the brakes on the motorcar​

Answers

Answered by Anonymous
11

Correct Question :-

A motor car is moving with a velocity of 108km/h and it takes 4 sec to stop after the brakes are applied . calculate the force exerted by the brakes on the motor car if its mass along with passenger is 1000 kg .

Given :-

A motor car is moving with the velocity

of 108km/h .

It takes 4 seconds to stop after brakes applied .

Solution :-

As we know ,

Acceleration = v - u / t

Here , initial velocity is 108 * 5/18

( convert it into meters that is why we multiply 5/18 with 108 )

final velocity = 0

Time = 4 seconds

Put the value in the required formula .

Acceleration = 0 - 108 * 5/18 / 4

Acceleration = - 7.5m/s^2

Force = Mass * Acceleration

Force = 1000 * - 7.5

Force = -7500 N

Answered by JennieRocks
17

Correct Question :-

A motor car is moving with a velocity of 108km/h and it takes 4 sec to stop after the brakes are applied . calculate the force exerted by the brakes on the motor car if its mass along with passenger is 1000 kg .

Given :-

A motor car is moving with the velocity

of 108km/h .

It takes 4 seconds to stop after brakes applied .

Solution :-

As we know ,

Acceleration = v - u / t

Here , initial velocity is 108 × 5/18

( convert it into meters that is why we multiply 5/18 with 108 )

final velocity = 0

Time = 4 seconds

Put the value in the required formula .

Acceleration = 0 - 108 × 5/18 / 4

Acceleration = - 7.5m/s²

Force = Mass × Acceleration

Force = 1000 × - 7.5

Force = -7500 N

Similar questions