Answer :
Final answer:
The kinetic energy of Usain Bolt while completing a 100 m race was calculated using the kinetic energy formula and his velocity. Bolt's velocity was calculated by dividing his sprint distance by time taken. By substituting Bolt's mass and calculated velocity into the kinetic energy formula, we found his kinetic energy to be about 5034 Joules.
Explanation:
Firstly, to calculate the kinetic energy, one needs to use the formula of kinetic energy which is KE = 0.5 * m * v2, where m is mass and v is velocity. Given that Usain Bolt's mass (m) is 94 kg, we will need to calculate his velocity (v) in order to proceed.
Velocity is calculated as distance divided by time. In this case, Usain Bolt covered a distance of 100m in 9.6 seconds. So, v = 100/9.6 = 10.4 m/s.
Substituting m = 94 kg and v = 10.4 m/s in the kinetic energy formula, we get:
KE = 0.5 * 94 kg * (10.4 m/s)2 = 5033.6 Joules. Therefore, Usain Bolt's kinetic energy while completing a 100 m race is approximately 5034 Joules.
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