Question

A motorcar is moving with a velocity of 108 km/h and it takes 5 s to stop after the brakes are applied. Calculate the force exerted by the brakes on the motorcar if its mass along with the passengers is 2000 kg.
answer correctly or I will report ​

Answer 1

Answer:

$108 \times 5 = 2000kg \\ 2000 \div 108$

Answer 2

Force=mass*acceleration

Force=mass*accelerationf=m×tv−u

Force=mass*accelerationf=m×tv−uf=1000×40−108×185

Force=mass*accelerationf=m×tv−uf=1000×40−108×185=1000×(−7.5)

Force=mass*accelerationf=m×tv−uf=1000×40−108×185=1000×(−7.5)∴f=−7500N

Force=mass*accelerationf=m×tv−uf=1000×40−108×185=1000×(−7.5)∴f=−7500Nopposing force is denoted by negative sign.