#1 What is the kinetic energy of a 3-kilogram ball that is rolling at 2 meters per second? (KE=1/2mv2)
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1 point
9 Joules
3 Joules
6 Joules
5 Joules
The kinetic energy (KE) of a 3-kilogram ball rolling at 2 meters per second can be calculated using the formula KE = 1/2mv^2, where m is the mass and v is the velocity.
Plugging in the given values, we have:
KE = 0.5 * 3 kg * (2 m/s)^2
= 0.5 * 3 * 4
= 6 Joules
Therefore, the kinetic energy of the ball is 6 Joules.