A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is?

By: |Published on: Mar 31|Categories: Physics JAMB| 0 comments

A. 1.25 x 104W
B. 2.50x 104W
C. 1.25 x 106W
D. 2.50 x 106W

Correct Answer:

Option B = 2.50x 104W

Explanation

P = mv2/t = 800×25×25/20
2.5 x 104W

 

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