A car weighing 10 g is initially moving with a velocity of 50 m/s. On applying a constant force on the ball for, 2 s, it acquires a velocity of 70 m/s. The initial momentum of the car will be

# A car weighing is initially moving with a velocity of On applying a constant force on the ball for, it acquires a velocity of. The initial momentum of the car will be

1. A
2. B
3. C
4. D

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### Solution:

A car weighing is initially moving with a velocity of On applying a constant force on the ball for, it acquires a velocity of. The initial momentum of the body will be
Given that,
Mass
Initial velocity as its car started.
Final velocity
Time
From the relation of momentum, mass and velocity
Momentum = mass ×velocity
Initial momentum

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