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A car traveling at a speed of 25km/h increased the speed to a) 75km/h b) 100km/h when exiting the highway. How many times has its kinetic energy increased?

Correct answer:

a =  9
b =  16

Step-by-step explanation:

v1=25 km/h v2=75 km/h v3=100 km/h  E = 21 m v2 E = K v2  a = E1E2 = K v12K v22  a=v12v22=252752=9

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