A ball of mass $m = 0.2 kg$ is moving with velocity $v_{i} = 60 m/s$ and a force acts on the ball for a instant and changed its velocity to $v_{f} = 90 m/s$ in same direction. Find the impulse imparted to the ball.

6 N-s

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3 N-s

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5 N-s

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4 N-s

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Solution

The correct option is A 6 N-s
Given:
$m = 0.2 kg, v_{i} = 60 m/s, v_{f} = 90 m/s$
We know,
$Impulse (J) = m (v_{f} - v_{i}) = 0.2 (90 - 60) N-s = 6 N-s$

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Q. A ball of mass

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A ball of mass m=0.2 kg is moving with velocity vi=60 m/s and a force acts on the ball for a instant and changed its velocity to vf=90 m/s in same direction. Find the impulse imparted to the ball.

The correct option is A 6 N-sGiven: m=0.2 kg,vi=60 m/s,vf=90 m/s We know, Impulse(J)=m(vf−vi)=0.2(90−60) N-s=6 N-s

A ball of mass $m = 0.2 kg$ is moving with velocity $v_{i} = 60 m/s$ and a force acts on the ball for a instant and changed its velocity to $v_{f} = 90 m/s$ in same direction. Find the impulse imparted to the ball.

The correct option is A 6 N-s
Given:
$m = 0.2 kg, v_{i} = 60 m/s, v_{f} = 90 m/s$
We know,
$Impulse (J) = m (v_{f} - v_{i}) = 0.2 (90 - 60) N-s = 6 N-s$