1.What is the kinetic energy of a 394kg car moving at 15 m/s? 2.A truck has a kinetic energy of 150 000J and a mass of 95kg. What

Question

1.What is the kinetic energy of a 394kg car moving at 15 m/s?

2.A truck has a kinetic energy of 150 000J and a mass of 95kg. What is the truck’s velocity?

3.What is the gravitational potential energy of a box with a weight of 645 000 N at a height of 36m?

4.A 16kg wagon moving at 23m/s. What is the kinetic energy?

5.If a 5kg cinder block was on a 65m ledge, would its gravitational potential energy be? 

6.If a 0.14 kg baseball has a kinetic energy of 58 000J, what would its velocity be?

7.If a 0.02 kg bullet is moving at 106m/s, what would be the kinetic energy?

8.What is a motorcycle’s velocity if it has a kinetic energy of 835 000 J and a mass of 76kg?

9.At what height would a 40kg person need to be to have 350 000J of gravitational potential energy?​

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Verity 4 years 2021-08-23T23:07:45+00:00 1 Answers 6 views 0

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    2021-08-23T23:08:45+00:00

    FORMULA:

    • K.E. = 1/2mv²

    ANSWER:

    We are given with mass of car 394kg and velocity of car 15m/s.

    Plugging the respective value,

    • K.E. = 1/2 × 394 × 15²
    • K.E. = 197 × 225
    • K.E. = 44,325J

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