Question

A car of mass 1000 kg increases its speed from rest to 20 m/s in 5 sec.What is the force generated by the engine?​

Answer 1

Answer:

If. You. Mark. Me. As. Brilliant. I. Will. Follow. You.

Answer 2

Answer:

Correct option is

B

7.71×10

4

W

Mass of the car m=1000 kg

Initial velocity of car v

1

=0

Final velocity of car v

2

=100km/h=100×

18

5

m/s=27.78m/s

Average power of car=change in kinetic energy per unit time=

t

2

1

mv

2

2

−

2

1

mv

1

2

,since v

1

=0

So,average power of car=

t

2

1

mv

2

2

=

5

2

1

×1000×27.78

2

=7.71×10

4

Step-by-step explanation:

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