QuestionDecember 18, 2025

A 60 kg sprinter is running at a velocity of 8m/s during a race Calculate the sprinter's kinetic energy. 240J 480 J 3,480J 1,920 J

A 60 kg sprinter is running at a velocity of 8m/s during a race Calculate the sprinter's kinetic energy. 240J 480 J 3,480J 1,920 J
A 60 kg sprinter is running at a velocity of 8m/s during a race Calculate
the sprinter's kinetic energy.
240J
480 J
3,480J
1,920 J

Solution
4.4(227 votes)

Answer

1,920 J Explanation 1. Write the kinetic energy formula Use KE = \frac{1}{2}mv^2. 2. Substitute values m = 60\,kg, v = 8\,m/s; KE = \frac{1}{2} \times 60 \times (8)^2 3. Calculate KE = 30 \times 64 = 1920\,J

Explanation

1. Write the kinetic energy formula<br /> Use $KE = \frac{1}{2}mv^2$.<br />2. Substitute values<br /> $m = 60\,kg$, $v = 8\,m/s$; $KE = \frac{1}{2} \times 60 \times (8)^2$<br />3. Calculate<br /> $KE = 30 \times 64 = 1920\,J$
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