Laws of Motion

Question: An object with a mass 10 kg moves at a constant velocity of 10 m/sec. A constant force then acts for 4 second on the object and gives it a speed of 2 m/sec in opposite direction, the impulse acting on the object is

1) $120\;newton \times \sec $

2) $ - 120\;newtont\sec $

3) $30\;newton \times \sec $

4) $ - 30\;newton \times \sec $

Solution:

Explanation: No Explanation

Second Law of Motion NLM

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