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 acceleration produced in it, is

1) $3\,m/{\sec ^2}$

2) $ - 3\,m/{\sec ^2}$

3) $0.3\,m/{\sec ^2}$

4) $ - 0.3\,m/{\sec ^2}$

Solution:

Explanation: No Explanation

Second Law of Motion NLM

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