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polish101:

A car has a kinetic energy of 1.9 × 103 joules. If the velocity of the car is decreased by half, what is its kinetic energy?

CKB:

Kinetic energy is a form of energy, and the formula for it is Kinetic Energy=mv^2

CKB:

if that makes sense

polish101:

not really, tbh

CKB:

So the def of energy is the ability to do work

polish101:

Although it probably would have helped if I included the choices... A.2.2 × 102 joules B.4.7 × 102 joules C.5.2 × 102 joules D. 5.8 × 103 joules

CKB:

yeah

polish101:

Thanks!

CKB:

did you get the answer was B?

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