A truck of mass 1000 kg increases its speed from 36 km h -1 to 72 km h -1 . Find the increase in its kinetic energy.

Given: Mass (m) = 1000 kg 1 km h -1 = m s -1 36 km h -1 = x 36 = 10 m s -1 So, initial speed (v 1 ) = 10 m s -1 1 km h -1 = m s -1 72 km h -1 = x 72 = 20 m s -1 So, final speed (v 2 ) = 72 km h -1 = 20 m s -1 Increase in its kinetic energy = ? Increase in kinetic energy = m[(v 2 ) 2 - (v 1 ) 2 ] = x 1000 x [(20) 2 - (10) 2 ] = 500 x [400 - 100] = 500 x 300 = 150000 J or 1.5 x 10 5 J So increase in kinetic energy = 1.5 x 10 5 J.

The potential energy of a body of mass 0.5 kg increases by 100 J when it is taken to the top of a tower from the ground. If the force of gravity on 1 kg = 10 N, what is the height of the tower?

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A body of mass 60 kg is moving with a speed 50 m s^-1. Find its kinetic energy.

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A car is moving with a speed of 15 km h^-1 and another identical car is moving with a speed of 30 km h^-1. Compare their kinetic energy.

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A pump raises water by spending 4 x 10⁵ J of energy in 10 s. Find the power of pump.

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Physics

A truck of mass 1000 kg increases its speed from 36 km h^-1 to 72 km h^-1. Find the increase in its kinetic energy.

Work, Energy & Power

Related Questions

The potential energy of a body of mass 0.5 kg increases by 100 J when it is taken to the top of a tower from the ground. If the force of gravity on 1 kg = 10 N, what is the height of the tower?

A body of mass 60 kg is moving with a speed 50 m s^-1. Find its kinetic energy.

A car is moving with a speed of 15 km h^-1 and another identical car is moving with a speed of 30 km h^-1. Compare their kinetic energy.

A pump raises water by spending 4 x 10⁵ J of energy in 10 s. Find the power of pump.

Physics

A truck of mass 1000 kg increases its speed from 36 km h-1 to 72 km h-1. Find the increase in its kinetic energy.

Work, Energy & Power

Related Questions

The potential energy of a body of mass 0.5 kg increases by 100 J when it is taken to the top of a tower from the ground. If the force of gravity on 1 kg = 10 N, what is the height of the tower?

A body of mass 60 kg is moving with a speed 50 m s-1. Find its kinetic energy.

A car is moving with a speed of 15 km h-1 and another identical car is moving with a speed of 30 km h-1. Compare their kinetic energy.

A pump raises water by spending 4 x 105 J of energy in 10 s. Find the power of pump.

A truck of mass 1000 kg increases its speed from 36 km h^-1 to 72 km h^-1. Find the increase in its kinetic energy.

A body of mass 60 kg is moving with a speed 50 m s^-1. Find its kinetic energy.

A car is moving with a speed of 15 km h^-1 and another identical car is moving with a speed of 30 km h^-1. Compare their kinetic energy.

A pump raises water by spending 4 x 10⁵ J of energy in 10 s. Find the power of pump.