Question

The work done to increase velocity of a car from 30ms to 40ms of mass 1000kg is

Answer 1

Answer:

Explanation:

Work = Change in kinetic energy

= 0.5 m (v² - u²)

= 0.5 × 1500 kg × [(60 × 5/18 m/s)² - (30 × 5/18 m/s)²]

= 156250 joules

= 156.25 kJ

Work done is 156.25 kJ

Answer 2

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