Motion in A Straight Line

Question: A body of mass 10 kg is moving with a constant velocity of 10 m/s. When a constant force acts for 4 seconds on it, it moves with a velocity 2 m/sec in the opposite direction. The acceleration produced in it is

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

2) \[ - 3m/{\sec ^2}\]

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

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

Solution:

Explanation: Explanation

non-uniform-motion

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