Physics · Work done by a constant force and a variable force, kinetic and potential energies, work-energy theorem, power
A rubber ball of mass has the same diameter as a plastic ball of mass 0.5 kg. Bo
A rubber ball of mass \( 4 \mathrm{kg} \) has the same diameter as a plastic ball of mass 0.5 kg. Both the balls are dropped simultaneously from the roof of a building.When they are \( 8 \mathrm{m} \) above the ground,they have the same
- A. Kinetic energy
- B. Potential energy
- C. Momentum
- D. Acceleration
Step-by-step solution
Both balls are in free fall under gravity. Neglecting air resistance, their acceleration is g, which is independent of mass. Thus, they have the same acceleration. Kinetic energy, potential energy, and momentum all depend on mass, so they differ.
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