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
A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is?
![A car traveling at 30m‾¹ overcomes a frictional resistance of 100N while moving. Calculate the power developed by the engine. [1 hp = 0.75 kW]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A car traveling at 30m‾¹ overcomes a frictional resistance of 100N while moving. Calculate the power developed by the engine. [1 hp = 0.75 kW]")
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