CONSERVATION OF MECHANICAL ENERGY
Work, Energy and Power

268600 Internal forces can change

1 Kinetic energy
2 mechanical energy
3 Momentum
4 1 and 2
Work, Energy and Power

268602 Which of the following statement is wrong?

1 \(\mathrm{KE}\) of a body is independent of the direction of motion
2 In an elastic collision of two bodies, the momentum and energy of each body is conserved
3 If two protons are brought towards each other, the PE of the system increases
4 A body can have energy without momentum
Work, Energy and Power

268603 When a body falls from an aeroplane there is increase in its:

1 acceleration
2 potential energy
3 kinetic energy
4 mass
Work, Energy and Power

268596 A cricket ball and a ping-pong ball are dropped in a vacuum chamber from same height. When they have fallen half way down, they have the same

1 velocity
2 potential energy
3 kinetic energy
4 mechanical energy
Work, Energy and Power

268597 A cyclist free-wheels from the top of a hill, gathers speed going down the hill, applies his brakes and eventually comes to rest at the bottom of the hill. Which one of the following energy changes take place.

1 Potential to kinetic and to heat energy
2 Kinetic to potential and to heat energy
3 chemical to heat and to potential energy
4 Kinetic to heat and to chemical energy
Work, Energy and Power

268600 Internal forces can change

1 Kinetic energy
2 mechanical energy
3 Momentum
4 1 and 2
Work, Energy and Power

268602 Which of the following statement is wrong?

1 \(\mathrm{KE}\) of a body is independent of the direction of motion
2 In an elastic collision of two bodies, the momentum and energy of each body is conserved
3 If two protons are brought towards each other, the PE of the system increases
4 A body can have energy without momentum
Work, Energy and Power

268603 When a body falls from an aeroplane there is increase in its:

1 acceleration
2 potential energy
3 kinetic energy
4 mass
Work, Energy and Power

268596 A cricket ball and a ping-pong ball are dropped in a vacuum chamber from same height. When they have fallen half way down, they have the same

1 velocity
2 potential energy
3 kinetic energy
4 mechanical energy
Work, Energy and Power

268597 A cyclist free-wheels from the top of a hill, gathers speed going down the hill, applies his brakes and eventually comes to rest at the bottom of the hill. Which one of the following energy changes take place.

1 Potential to kinetic and to heat energy
2 Kinetic to potential and to heat energy
3 chemical to heat and to potential energy
4 Kinetic to heat and to chemical energy
Work, Energy and Power

268600 Internal forces can change

1 Kinetic energy
2 mechanical energy
3 Momentum
4 1 and 2
Work, Energy and Power

268602 Which of the following statement is wrong?

1 \(\mathrm{KE}\) of a body is independent of the direction of motion
2 In an elastic collision of two bodies, the momentum and energy of each body is conserved
3 If two protons are brought towards each other, the PE of the system increases
4 A body can have energy without momentum
Work, Energy and Power

268603 When a body falls from an aeroplane there is increase in its:

1 acceleration
2 potential energy
3 kinetic energy
4 mass
Work, Energy and Power

268596 A cricket ball and a ping-pong ball are dropped in a vacuum chamber from same height. When they have fallen half way down, they have the same

1 velocity
2 potential energy
3 kinetic energy
4 mechanical energy
Work, Energy and Power

268597 A cyclist free-wheels from the top of a hill, gathers speed going down the hill, applies his brakes and eventually comes to rest at the bottom of the hill. Which one of the following energy changes take place.

1 Potential to kinetic and to heat energy
2 Kinetic to potential and to heat energy
3 chemical to heat and to potential energy
4 Kinetic to heat and to chemical energy
Work, Energy and Power

268600 Internal forces can change

1 Kinetic energy
2 mechanical energy
3 Momentum
4 1 and 2
Work, Energy and Power

268602 Which of the following statement is wrong?

1 \(\mathrm{KE}\) of a body is independent of the direction of motion
2 In an elastic collision of two bodies, the momentum and energy of each body is conserved
3 If two protons are brought towards each other, the PE of the system increases
4 A body can have energy without momentum
Work, Energy and Power

268603 When a body falls from an aeroplane there is increase in its:

1 acceleration
2 potential energy
3 kinetic energy
4 mass
Work, Energy and Power

268596 A cricket ball and a ping-pong ball are dropped in a vacuum chamber from same height. When they have fallen half way down, they have the same

1 velocity
2 potential energy
3 kinetic energy
4 mechanical energy
Work, Energy and Power

268597 A cyclist free-wheels from the top of a hill, gathers speed going down the hill, applies his brakes and eventually comes to rest at the bottom of the hill. Which one of the following energy changes take place.

1 Potential to kinetic and to heat energy
2 Kinetic to potential and to heat energy
3 chemical to heat and to potential energy
4 Kinetic to heat and to chemical energy
Work, Energy and Power

268600 Internal forces can change

1 Kinetic energy
2 mechanical energy
3 Momentum
4 1 and 2
Work, Energy and Power

268602 Which of the following statement is wrong?

1 \(\mathrm{KE}\) of a body is independent of the direction of motion
2 In an elastic collision of two bodies, the momentum and energy of each body is conserved
3 If two protons are brought towards each other, the PE of the system increases
4 A body can have energy without momentum
Work, Energy and Power

268603 When a body falls from an aeroplane there is increase in its:

1 acceleration
2 potential energy
3 kinetic energy
4 mass
Work, Energy and Power

268596 A cricket ball and a ping-pong ball are dropped in a vacuum chamber from same height. When they have fallen half way down, they have the same

1 velocity
2 potential energy
3 kinetic energy
4 mechanical energy
Work, Energy and Power

268597 A cyclist free-wheels from the top of a hill, gathers speed going down the hill, applies his brakes and eventually comes to rest at the bottom of the hill. Which one of the following energy changes take place.

1 Potential to kinetic and to heat energy
2 Kinetic to potential and to heat energy
3 chemical to heat and to potential energy
4 Kinetic to heat and to chemical energy