a moving car of mass 1200kg has 2.96 x 105 J of K.E. calculate its speed in km/h

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Solution

KE = 1/2mv²
2.96(10⁵) = 0.5(1200)v²
speed = 22.2 m/s
= 79.9 km/h

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a moving car of mass 1200kg has 2.96 x 105 J of K.E. calculate its speed in km/h

KE = 1/2mv2 2.96(105) = 0.5(1200)v2 speed = 22.2 m/s = 79.9 km/h

KE = 1/2mv²
2.96(10⁵) = 0.5(1200)v²
speed = 22.2 m/s
= 79.9 km/h