the work done in a lifting brick of mass 2 kg through a height of 5 m above ground will be
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The work done in lifting a brick of mass 2 kg through· a height of 5 m above the ground will be: That kinetic energy of a body of mass 2 kg is 25 J
Answered by
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The work done in lifting a brick of mass 2 kg through a height of 5 m above the ground will be: That kinetic energy of a body of mass 2 kg is 25 J.
What is kinetic energy of a body?
- A body in motion is said to possess kinetic energy.
- The energy possessed by a body by virtue of its state of motion is called kinetic energy.
- KE=21mv2. m; the mass of the object.
What is the kinetic energy formula?
- Kinetic energy is directly proportional to the mass of the object and to the square of its velocity.
- K.E. = 1/2 m v2.
- If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.
What is kinetic energy?
- Kinetic energy is a form of energy which helps an object to remain in motion.
- When an object is applied net force, that object gains speed and eventually, gains kinetic energy.
According to the question:
Mass = 2 kg.
Height = 5m.
kinetic energy = 1/2 m v2.
= 1/2×2×5×5.
= 50/2
= 25.
Hence, The work done in lifting a brick of mass 2 kg through a height of 5 m above the ground will be, That kinetic energy of a body of mass 2 kg is 25 J.
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