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Final Velocities

A car weighin...

Question

A car weighing 1600 kg moving with a velocity of 30 m/ s retards uniformly coming to rest in 20s. Calculate the Rate of change of momentum of the car and acceleration of the car

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Q. A toy car of mass

500 g

travels with a uniform velocity of

25 c m

s^{- 1}

5 s

. The brakes are then applied and the car is uniformly retarded and comes to rest in further

10 s

. Calculate the retardation.

A car is moving with a uniform velocity of 30 m $s^{- 1}$ . It is stopped in 2 s by applying a force of 1500 N through its brakes. Calculate:

(a) the change in momentum of car,
(b) the retardation produced in car and
(c) the mass of the car.

Q. A truck weighing

2000 k g

moving with a velocity of

60 k m / h r

retards uniformly to rest in

10 s e c

. Then the change in momentum that take place in

10 s e c

:

Q. A car starts from rest and accelerates uniformly for 10s to a velocity of 36km/hr .It then runs at constant velocity and finally comes to rest in 50m with constant retardation . Find The total acceleration, time taken and retardation of car.

1500 N

acts on a car at rest for

2 s

to make it move with a uniform velocity of

30 m / s

. Calculate:
(i) Change in momentum of the car
(ii) Mass of the car

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