Calculate the kinetic energy of a box that has a mass of 5 kg and sliding with a speed of 3 m/s
Answers
Answered by
7
Answer:
22.5J.
Explanation:
In the question, we have been given mass and speed of a box and we have to calculate kinetic energy. We will use the formula of kinetic energy.
Mass of a box = 5kg.
Speed of a box = 3m/s.
By kinetic energy formula,
K.E. = ½ mv²
Substitute values
=> K.E. = ½ × 5 × (3)²
=> K.E. = ½ × 5 × 9
=> K.E. = ½ × 45
=> K.E. = 22.5J.
Therefore, kinetic energy of the box is 22.5 joule.
____________________________
Answered by
0
Answer:
245
Explanation:
We have, the mass of the block, M=5kg
Angle of inclination isθ=300
The gravitational force acting the block, F=mg
Work done by the force of gravity depends on the height of the object, not on the path length covered by the object.
Height of the object, H=10×sin300
=10×21=5m
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