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

maths 
Steve
(1) 1600*30
(2) 0
(3) p = mv, so dp/dt = m dv/dt = 1600*(030)/(200) = 2400 kgm/s
(4) see (3)
(5) F = ma 
maths 
Prachi jain
Samaj nahi aaya explain briefly
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