# physics

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0.50 kg cream pie strikes a circus clown in the face at a speed of 5.00 m/s and stops. What is the change in kinetic energy of the pie?
in joules

• physics -

(1/2) m v^2

• physics -

thts the formula for how to find kinetic energy not how to calculate the change in kin. energy. what is the formula for change?

• physics -

It stopped, therefore the final Ke is zero so the change is -(1/2)mv^2

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