A cyclist and bike have a total mass of 100 kg and a speed of 15 m/s. Calculate the kinetic energy.
Answers
Answered by
66
Explanation:
m= 100kg , v= 15 m/s
KE=1/2 × 100 × (15)²
KE= 11250J
Answered by
8
Given,
Mass of the cyclist and bike = 100 kg
Speed = 15 m/s
To find,
The amount of kinetic energy.
Solution,
We can simply solve this numerical problem by the following process.
Here, we have to use the following mathematical equation -
Kinetic energy = ½ × mass × (velocity)²
By, putting the given values we get,
Kinetic energy = [½ × 100 × (15)²] J
Kinetic energy = [½ × 100 × 225] J
Kinetic energy = (50 × 225) J
Kinetic energy = 11250 J
Kinetic energy = 11.25 kJ
(Term of unit conversion : 1000 J = 1 kJ)
Hence, the kinetic energy will be 11.25 kJ
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