If a car moves from 15 m/s to 5 m/s in 10 sec then average acceleration is
Correct answer: A. -1 m/s^2
- A. -1 m/s^2
- B. 2m/s^2
- C. 5 m/s^2
- D. 10m/s^2
Explanation
The average acceleration of a car can be calculated using the formula: Average acceleration = (change in velocity) / (time taken) In this case, the change in velocity is given by (final velocity - initial velocity), and the time taken is 10 seconds. Given: Initial velocity (u) = 15 m/s Final velocity (v) = 5 m/s Time taken (t) = 10 sec Average acceleration = (v - u) / t = (5 m/s - 15 m/s) / 10 sec = (-10 m/s) / 10 sec = -1 m/s² Therefore, the average acceleration of the car is -1 m/s². The negative sign indicates that the car is decelerating or slowing down during the given time interval.
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