Answer to Question #301697 in Physics for jazz

Question #301697

A 10-Newton object moves to the left at 1 m/s. Its kinetic energy is approximately Joules if you double the speed.

a. 0.5 b. 1 c. 10 d. 20

Expert's answer

The kinetic energy

"E_k=\\frac{mv^2}{2}=\\rm\\frac{1\\: kg*(1\\: m\/s)^2}{2}=0.5\\:J"

Answer: a

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