Answer :
Final answer:
The total energy of the watermelon is calculated by adding the potential energy (strength due to its height) and kinetic energy (strength due to its upward motion) which gives a sum of 182J.
Explanation:
The total energy of the watermelon can be calculated by adding the potential energy (PE) and the kinetic energy (KE) it possesses.
Firstly, we calculate the potential energy using the formula PE = mgh, where m is the mass, g is the gravitational pull, and h is the height. Here, m = 1.4kg, g = 9.8m/s^2 (approx), and h = 10m. Therefore, PE = 1.4 * 9.8 * 10 = 137.2 J.
Secondly, we calculate the kinetic energy using the formula KE = 0.5*m*v^2, where m is the mass and v is the velocity. Here, m = 1.4kg and v = 8m/s. Therefore, KE = 0.5 * 1.4 * (8)^2 = 44.8 J.
The total energy would then be PE + KE, or 137.2J + 44.8J, which is 182J. Therefore, the total energy of the watermelon is 182J.
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