Question

use the table of information to answer the question. mass and speed of watermelons fruit mass (kg) speed (m/s) watermelon a 4 2 watermelon b 4 4 two watermelons fall off a kitchen counter. the masses and speeds of the fruits are in the table. how do the kinetic and/or the potential energies of the fruits compare? (1 point) the watermelon b has more kinetic energy. both fruits have the same kinetic and potential energy. both fruits have only potential energy and no kinetic energy. the watermelon a has more kinetic energy.

Explanation:

Step1: Calculate kinetic energy of Watermelon A

The formula for kinetic energy is \(KE=\frac{1}{2}mv^{2}\). For Watermelon A, \(m = 4\space kg\) and \(v=2\space m/s\). So \(KE_{A}=\frac{1}{2}\times4\times2^{2}=8\space J\)

Step2: Calculate kinetic energy of Watermelon B

For Watermelon B, \(m = 4\space kg\) and \(v = 4\space m/s\). So \(KE_{B}=\frac{1}{2}\times4\times4^{2}=32\space J\)

Step3: Analyze potential energy

Since they fall from the same height (same \(h\)) and \(PE = mgh\) (\(m\) and \(g\) are same for both), potential energy is same at the start. But as they are falling, they have kinetic energy.

Answer:

The watermelon B has more kinetic energy.