# physics

A car with a mass of 1435 kg moves at 11 m/s. What braking force is needed to bring the car to a halt in 10 s?

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1. The impulse delivered, (force)*(time), must equal the initial monetum, (mass)*(velocity).

Thus F = M V/T , in Newtons

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2. 2500

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3. the answer is clearly in the formula and if you just plug in it will give you the answer but you might just have to figure out one variable with another equation then plug back in, its simple not too hard...

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