True or False: When rolling down a hill, a larger rock with greater mass will have more kinetic energy than a smaller rock with less mass, even if they roll at the same speed.

(1 point)
Responses

True, a rock with more mass will have more kinetic energy than a rock with less mass when rolling at the same speed.

False, a rock with more mass will not have more kinetic energy than a rock with less mass when rolling at the same speed.

1 answer

True, a rock with more mass will have more kinetic energy than a rock with less mass when rolling at the same speed.

The kinetic energy (KE) of an object is given by the formula:

\[ KE = \frac{1}{2} mv^2 \]

where \( m \) is the mass of the object and \( v \) is its velocity. If both rocks are rolling at the same speed, the one with the greater mass will indeed have more kinetic energy.