A baseball pitcher does work with histhrowing arm to give the ball a propertycalled kinetic energy, which depends onthe ball’s mass and speed. Which has thegreatest kinetic energy? (i) A ball of mass0.145 kg moving at 20.0 m/s; (ii) a smallerball of mass 0.0145 kg moving at 200 m/s;(iii) a larger ball of mass 1.45 kg moving at2.00 m/s; (iv) all three balls have the samekinetic energy; (v) it depends on the directionsin which the balls move.
A baseball pitcher does work with histhrowing arm to give the ball a propertycalled kinetic energy, which depends onthe ball’s mass and speed. Which has thegreatest kinetic energy? (i) A ball of mass0.145 kg moving at 20.0 m/s; (ii) a smallerball of mass 0.0145 kg moving at 200 m/s;(iii) a larger ball of mass 1.45 kg moving at2.00 m/s; (iv) all three balls have the samekinetic energy; (v) it depends on the directionsin which the balls move.
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A baseball pitcher does work with his
throwing arm to give the ball a property
called kinetic energy, which depends on
the ball’s mass and speed. Which has the
greatest kinetic energy? (i) A ball of mass
0.145 kg moving at 20.0 m/s; (ii) a smaller
ball of mass 0.0145 kg moving at 200 m/s;
(iii) a larger ball of mass 1.45 kg moving at
2.00 m/s; (iv) all three balls have the same
kinetic energy; (v) it depends on the directions
in which the balls move.
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