1.

The energy required to accelerate a car from 10m/s to 20 m/s is n times the energy required to 26actelerate the same from rest to 10 m/s wtvoreris:

Answer»

The difference of K.E in first case is 1/2 m 400 - 1/2 m 100 = 1.2 m 300

The difference in K.E. in second case is 1/2 m 100 - 1/2 m 0 = 1/2 m 100

So answer is 3 times.

i Don't ⛔ understand



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