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m_a_m_a [10]
3 years ago
9

A mass of 2000 kg is raised 5 m in 10 seconds. What is the kinetic energy of the mass at that height?

Physics
1 answer:
madam [21]3 years ago
3 0
<h3><u>Answer;</u></h3>

98,000 joules

<h3><u>Explanation;</u></h3>

Kinetic is the energy possessed by a body in motion; while kinetic energy is the energy possessed by a body while at rest.

Potential energy is given by; mgh, where m is the mass, g the gravity, 9.8 m/s² and h is the height.

Energy can be transformed from one form to another and can neither be created or destroyed.

Therefore;

Potential energy = 2000 × 5 × 9.8

                            = 98,000 joules

Therefore, the kinetic energy will still be 98,000 joules, when the body is in motion.

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8 0
3 years ago
A student gives a 5.0 kg box a brief push causing the box to move with an initial speed of 8.0 m/s along a rough surface. The bo
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Answer:

The time taken to stop the box equals 1.33 seconds.

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