what is the work done to increase the velocity of a car from 45 kilometre per hour to 80 km per hour if the weight of the car 200 N

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Solution

Work = Change in kinetic energy
= 0.5 m (v² - u²)
= 0.5 × 200 kg × [(80 × 5/18 m/s)² - (45 × 5/18 m/s)²]
= 100* (22.22 -12.5)
=100* 9.72
= 972 joules

Work done is 972 JJ

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what is the work done to increase the velocity of a car from 45 kilometre per hour to 80 km per hour if the weight of the car 200 N

Work = Change in kinetic energy = 0.5 m (v² - u²) = 0.5 × 200 kg × [(80 × 5/18 m/s)² - (45 × 5/18 m/s)²] = 100* (22.22 -12.5) =100* 9.72 = 972 joules Work done is 972 JJ

Work = Change in kinetic energy
= 0.5 m (v² - u²)
= 0.5 × 200 kg × [(80 × 5/18 m/s)² - (45 × 5/18 m/s)²]
= 100* (22.22 -12.5)
=100* 9.72
= 972 joules

Work done is 972 JJ