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 rate of change of momentum is ____ N.

# 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 rate of change of momentum is ____ $N.$

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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 rate of change of momentum is
Given that,
Mass
Initial velocity as its car started.
Final velocity
Time
From the relation of momentum, mass and velocity
Initial momentum
Final momentum
Rate of change of momentum
$=\frac{\left(00.7-00.5\right)}{20}$

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