Do you want to know how powerful the break in your car? Or just want to estimate

Question

Do you want to know how powerful the break in your car? Or just want to estimate the magnitude of the breaking force when you exit the freeway and approach the red light.

In this home project, you can gain the further knowledge of Impulse I, which is the product of Breaking Force and the Time Interval by measuring the Momentum Change.

I = F x t = MVi – MVf

Vi is the initial velocity when you start to exit the freeway,

Vf is the final velocity when you approach the red light, usually it is zero.

t is the time duration when Vi changes to Vf, or the time interval when you step on the

   break. Some people don’t step on the break, rather let the car rolls until stop, in this

   case, the friction on the road becomes a “break”

record Vi

record t

check the mass M of your car from internet or your car’s manual

calculate the break force:

F = (MVi – MVf)/ t

Explanation / Answer

this is the bes approach of learning Impulse

According to impulse momentum theorem

impulse acting on a bidy = change in momentum

J = Force* time = MV - MU

Force F = (Mv-mu)/t

F = m(v-u)/t

F = ma -------------<<<<<<<<<<<<<<<Newtons II law

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