A body is moving with an initial velocity of 2 kms-1. After a time of 50 secs its velocity becomes 1.5 kms-1, Its acceleration will be:
Correct answer: D. -10 m/s2
- A. 30 m/s2
- B. 40 m/s2
- C. 20 m/s2
- D. -10 m/s2
Explanation
Explanation:The acceleration of the body can be calculated using the formula: a = vf - vi / tSubstituting the given values, we get: a = (1.5 km/s - 2 km/s) / 50s = -0.01 km/s²Multiplying by 1000 to convert km/s² to m/s², we get: a = -10 m/s²Therefore, the acceleration of the body is 10 m/s². The negative sign indicates that the acceleration is in the opposite direction to the initial velocity.
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