QuestionMay 5, 2026

If a chipmunk dropped an 0.25 kg acorn from the top of a tree and it had a velocity of 4m/s right before it hit the ground, then how much kinetic energy did it have? Enter the answer

If a chipmunk dropped an 0.25 kg acorn from the top of a tree and it had a velocity of 4m/s right before it hit the ground, then how much kinetic energy did it have? Enter the answer
If a chipmunk dropped an 0.25 kg acorn from the top of a tree and it had a velocity of 4m/s right before it hit the ground, then how much kinetic energy did it have? Enter the answer

Solution
4.6(246 votes)

Answer

2 J Explanation 1. Apply kinetic energy formula Use KE = \frac{1}{2}mv^2 with m = 0.25\ \text{kg} and v = 4\ \text{m/s}. 2. Calculate KE = \frac{1}{2} \times 0.25 \times (4)^2 = 0.125 \times 16 = 2\ \text{J}.

Explanation

1. Apply kinetic energy formula <br /> Use $KE = \frac{1}{2}mv^2$ with $m = 0.25\ \text{kg}$ and $v = 4\ \text{m/s}$. <br />2. Calculate <br /> $KE = \frac{1}{2} \times 0.25 \times (4)^2 = 0.125 \times 16 = 2\ \text{J}$.
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