How much power is required by the car of question #1, with a mass of 1500 kg, to

Question

How much power is required by the car of question #1, with a mass of 1500 kg, to accelerate at the 1.0 g level at a speed of 60 miles per hour (28 m/s). One horsepower is 746 watts (joules/second). Remember the boat where power is equal to the product of force and speed.

A. 100 kW (140 hp) B. 200 kW (275 hp) C. 300 kW (415 hp)

D.400 kW (550 hp) E. 500 kW (700 hp)

question #1
If you were able to accelerate in your car with the same acceleration as gravity (9.8m/s2), how long would it take to accelerate to a speed of 60 mph? (100 km/hr, 28 m/s)

A. 1.0 s B. 2.0 s C. 3.0 s D. 4.0 s E. 9.8 s

Explanation / Answer

power required = force * speed
= mass*acceleartion * speed
= 1500*9.81*28
=411.6 KW 550 hp .............(D)

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