1.

The kinetic energy of a car is calculated to be 1250000 J. If the car has a mass of 1000 kg, with what speed is it moving?

Answer»

Solution :KE=1250 kJ , m=1000 kg
USING the formula`KE=1/2mv^2`
we GET : `V=(2 KE//m)^(1//2)`
`v=(2xx1250000//1000)^(1//2)=(2500)^(1//2)`
v=50 m/s


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