# maths

posted by mike

a car weighing 1600kg moving with a velocity of 30 meter per second retarded uniformly coming to rest in 20 seconds calculate
1, initial momentum
2, final momentum
3, rate of change of momentum
4,acceleration of the car
5, magnitude of the force apply

1. Steve

(1) 1600*30
(2) 0
(3) p = mv, so dp/dt = m dv/dt = 1600*(0-30)/(20-0) = -2400 kg-m/s
(4) see (3)
(5) F = ma

2. Prachi jain

Samaj nahi aaya explain briefly

3. Payalbansal

Don't know

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