Usain Bolt, the world famous sprinter, of
mass 94 kg completes a 100 m race in 9.6 s.
Calculate his kinetic energy,
please solve I need help no one can fraud me plese
Answers
Given data : Usain Bolt, the world famous sprinter, of mass 94 kg completes a 100 m race in 9.6 s.
To find : Kinetic energy of Usain Bolt ?
Solution : Now, according to given,
⟹ Mass of Usain Bolt = 94 kg
⟹ Displacemet of Usain Bolt = 100 m
⟹ Time taken by Usain Bolt = 9.6 sec
Usain Bolt completes a 100 m race in 9.6 sec.
Now, by formula of velocity :
⟹ velocity = displacemet/time
⟹ velocity = 100/9.6 m/s
Now, by formula of kinetic energy :
⟹ K.E. = ½ * m * v²
⟹ K.E. = ½ * 94 * (100/9.6)²
⟹ K.E. = ½ * 94 * 10000/92.16
⟹ K.E. = 47 * 10000/92.16
⟹ K.E. = 47 * 108.5069444
⟹ K.E. = 5099.826389 joule
Answer : Kinetic energy of Usain Bolt is 5099.826389 joule { or 5100 joule }.
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Answer:
Given data : Usain Bolt, the world famous sprinter, of mass 94 kg completes a 100 m race in 9.6 s.
To find : Kinetic energy of Usain Bolt ?
Solution : Now, according to given,
⟹ Mass of Usain Bolt = 94 kg
⟹ Displacemet of Usain Bolt = 100 m
⟹ Time taken by Usain Bolt = 9.6 sec
Usain Bolt completes a 100 m race in 9.6 sec.
Now, by formula of velocity :
⟹ velocity = displacemet/time
⟹ velocity = 100/9.6 m/s
Now, by formula of kinetic energy :
⟹ K.E. = ½ * m * v²
⟹ K.E. = ½ * 94 * (100/9.6)²
⟹ K.E. = ½ * 94 * 10000/92.16
⟹ K.E. = 47 * 10000/92.16
⟹ K.E. = 47 * 108.5069444
⟹ K.E. = 5099.826389 joule
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