Acar has mass 1500 kg and is traveling at a speed of 35 miles/hour. what is its kinetic energy in joules? (be sure to convert miles/hour to m/s). if the car increases its speed to 70 miles/hour, by what factor does its kinetic energy increase? show work

Factor by which kinetic energy increase = 4 times

Step-by-step explanation:

Given,

                               = 15.64 m/s

Initial kinetic energy of the car is given by,

       = 183606.46 J

                                      = 31.29 m/s

So, final kinetic energy of car is given by

        = 734425.84 J

Now, the ratio of final to initial kinetic energy can be given by,

Hence, the kinetic energy will increase by 4 times.

answer: 45

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step-by-step explanation: