WORK ENERGY THEOREMBY CONSTANT FORCE
Work, Energy and Power

268657 A body of mass \(2 \mathrm{~kg}\) is projected with an initial velocity of \(5 \mathrm{~ms}^{-1}\) along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is

1 \(250 \mathrm{~J}\)
2 \(25 \mathrm{~J}\)
3 \(-250 \mathrm{~J}\)
4 \(-25 \mathrm{~J}\)
Work, Energy and Power

268658 An object is acted on by a retarding force of \(10 \mathrm{~N}\) and at a particular instant its kinetic energy is \(6 \mathrm{~J}\). The object will come to rest after it has travelled a distance of

1 \(3 / 5 \mathrm{~m}\)
2 \(5 / 3 \mathrm{~m}\)
3 \(4 \mathrm{~m}\)
4 \(16 \mathrm{~m}\)
Work, Energy and Power

268659 By applying the brakes without causing a skid, the driver of a car is able to stop his car with in a distance of \(5 \mathrm{~m}\), if it is going at \(36 \mathrm{kmph}\). If the car were going at \(72 \mathrm{kmph}\), using the same brakes, he can stop the car over a distance of

1 \(10 \mathrm{~m}\)
2 \(2.5 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(40 \mathrm{~m}\)
Work, Energy and Power

268660 A bullet fired into a trunk of a tree loses \(1 / 4\) of its kinetic energy in travelling a distance of 5 \(\mathrm{cm}\). Before stopping it travels a further distance of

1 \(150 \mathrm{~cm}\)
2 \(1.5 \mathrm{~cm}\)
3 \(1.25 \mathrm{~cm}\)
4 \(15 \mathrm{~cm}\)
Work, Energy and Power

268719 A body moving with a kinetic energy of \(6 \mathrm{~J}\) comes to rest at a distance of \(1 \mathrm{~m}\) due to a retarding force of

1 \(4 \mathrm{~N}\)
2 \(6 \mathrm{~N}\)
3 \(5 \mathrm{~N}\)
4 \(8 \mathrm{~N}\)
Work, Energy and Power

268657 A body of mass \(2 \mathrm{~kg}\) is projected with an initial velocity of \(5 \mathrm{~ms}^{-1}\) along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is

1 \(250 \mathrm{~J}\)
2 \(25 \mathrm{~J}\)
3 \(-250 \mathrm{~J}\)
4 \(-25 \mathrm{~J}\)
Work, Energy and Power

268658 An object is acted on by a retarding force of \(10 \mathrm{~N}\) and at a particular instant its kinetic energy is \(6 \mathrm{~J}\). The object will come to rest after it has travelled a distance of

1 \(3 / 5 \mathrm{~m}\)
2 \(5 / 3 \mathrm{~m}\)
3 \(4 \mathrm{~m}\)
4 \(16 \mathrm{~m}\)
Work, Energy and Power

268659 By applying the brakes without causing a skid, the driver of a car is able to stop his car with in a distance of \(5 \mathrm{~m}\), if it is going at \(36 \mathrm{kmph}\). If the car were going at \(72 \mathrm{kmph}\), using the same brakes, he can stop the car over a distance of

1 \(10 \mathrm{~m}\)
2 \(2.5 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(40 \mathrm{~m}\)
Work, Energy and Power

268660 A bullet fired into a trunk of a tree loses \(1 / 4\) of its kinetic energy in travelling a distance of 5 \(\mathrm{cm}\). Before stopping it travels a further distance of

1 \(150 \mathrm{~cm}\)
2 \(1.5 \mathrm{~cm}\)
3 \(1.25 \mathrm{~cm}\)
4 \(15 \mathrm{~cm}\)
Work, Energy and Power

268719 A body moving with a kinetic energy of \(6 \mathrm{~J}\) comes to rest at a distance of \(1 \mathrm{~m}\) due to a retarding force of

1 \(4 \mathrm{~N}\)
2 \(6 \mathrm{~N}\)
3 \(5 \mathrm{~N}\)
4 \(8 \mathrm{~N}\)
Work, Energy and Power

268657 A body of mass \(2 \mathrm{~kg}\) is projected with an initial velocity of \(5 \mathrm{~ms}^{-1}\) along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is

1 \(250 \mathrm{~J}\)
2 \(25 \mathrm{~J}\)
3 \(-250 \mathrm{~J}\)
4 \(-25 \mathrm{~J}\)
Work, Energy and Power

268658 An object is acted on by a retarding force of \(10 \mathrm{~N}\) and at a particular instant its kinetic energy is \(6 \mathrm{~J}\). The object will come to rest after it has travelled a distance of

1 \(3 / 5 \mathrm{~m}\)
2 \(5 / 3 \mathrm{~m}\)
3 \(4 \mathrm{~m}\)
4 \(16 \mathrm{~m}\)
Work, Energy and Power

268659 By applying the brakes without causing a skid, the driver of a car is able to stop his car with in a distance of \(5 \mathrm{~m}\), if it is going at \(36 \mathrm{kmph}\). If the car were going at \(72 \mathrm{kmph}\), using the same brakes, he can stop the car over a distance of

1 \(10 \mathrm{~m}\)
2 \(2.5 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(40 \mathrm{~m}\)
Work, Energy and Power

268660 A bullet fired into a trunk of a tree loses \(1 / 4\) of its kinetic energy in travelling a distance of 5 \(\mathrm{cm}\). Before stopping it travels a further distance of

1 \(150 \mathrm{~cm}\)
2 \(1.5 \mathrm{~cm}\)
3 \(1.25 \mathrm{~cm}\)
4 \(15 \mathrm{~cm}\)
Work, Energy and Power

268719 A body moving with a kinetic energy of \(6 \mathrm{~J}\) comes to rest at a distance of \(1 \mathrm{~m}\) due to a retarding force of

1 \(4 \mathrm{~N}\)
2 \(6 \mathrm{~N}\)
3 \(5 \mathrm{~N}\)
4 \(8 \mathrm{~N}\)
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Work, Energy and Power

268657 A body of mass \(2 \mathrm{~kg}\) is projected with an initial velocity of \(5 \mathrm{~ms}^{-1}\) along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is

1 \(250 \mathrm{~J}\)
2 \(25 \mathrm{~J}\)
3 \(-250 \mathrm{~J}\)
4 \(-25 \mathrm{~J}\)
Work, Energy and Power

268658 An object is acted on by a retarding force of \(10 \mathrm{~N}\) and at a particular instant its kinetic energy is \(6 \mathrm{~J}\). The object will come to rest after it has travelled a distance of

1 \(3 / 5 \mathrm{~m}\)
2 \(5 / 3 \mathrm{~m}\)
3 \(4 \mathrm{~m}\)
4 \(16 \mathrm{~m}\)
Work, Energy and Power

268659 By applying the brakes without causing a skid, the driver of a car is able to stop his car with in a distance of \(5 \mathrm{~m}\), if it is going at \(36 \mathrm{kmph}\). If the car were going at \(72 \mathrm{kmph}\), using the same brakes, he can stop the car over a distance of

1 \(10 \mathrm{~m}\)
2 \(2.5 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(40 \mathrm{~m}\)
Work, Energy and Power

268660 A bullet fired into a trunk of a tree loses \(1 / 4\) of its kinetic energy in travelling a distance of 5 \(\mathrm{cm}\). Before stopping it travels a further distance of

1 \(150 \mathrm{~cm}\)
2 \(1.5 \mathrm{~cm}\)
3 \(1.25 \mathrm{~cm}\)
4 \(15 \mathrm{~cm}\)
Work, Energy and Power

268719 A body moving with a kinetic energy of \(6 \mathrm{~J}\) comes to rest at a distance of \(1 \mathrm{~m}\) due to a retarding force of

1 \(4 \mathrm{~N}\)
2 \(6 \mathrm{~N}\)
3 \(5 \mathrm{~N}\)
4 \(8 \mathrm{~N}\)
Work, Energy and Power

268657 A body of mass \(2 \mathrm{~kg}\) is projected with an initial velocity of \(5 \mathrm{~ms}^{-1}\) along a rough horizontal table. The work done on the body by the frictional forces before it is brought to rest is

1 \(250 \mathrm{~J}\)
2 \(25 \mathrm{~J}\)
3 \(-250 \mathrm{~J}\)
4 \(-25 \mathrm{~J}\)
Work, Energy and Power

268658 An object is acted on by a retarding force of \(10 \mathrm{~N}\) and at a particular instant its kinetic energy is \(6 \mathrm{~J}\). The object will come to rest after it has travelled a distance of

1 \(3 / 5 \mathrm{~m}\)
2 \(5 / 3 \mathrm{~m}\)
3 \(4 \mathrm{~m}\)
4 \(16 \mathrm{~m}\)
Work, Energy and Power

268659 By applying the brakes without causing a skid, the driver of a car is able to stop his car with in a distance of \(5 \mathrm{~m}\), if it is going at \(36 \mathrm{kmph}\). If the car were going at \(72 \mathrm{kmph}\), using the same brakes, he can stop the car over a distance of

1 \(10 \mathrm{~m}\)
2 \(2.5 \mathrm{~m}\)
3 \(20 \mathrm{~m}\)
4 \(40 \mathrm{~m}\)
Work, Energy and Power

268660 A bullet fired into a trunk of a tree loses \(1 / 4\) of its kinetic energy in travelling a distance of 5 \(\mathrm{cm}\). Before stopping it travels a further distance of

1 \(150 \mathrm{~cm}\)
2 \(1.5 \mathrm{~cm}\)
3 \(1.25 \mathrm{~cm}\)
4 \(15 \mathrm{~cm}\)
Work, Energy and Power

268719 A body moving with a kinetic energy of \(6 \mathrm{~J}\) comes to rest at a distance of \(1 \mathrm{~m}\) due to a retarding force of

1 \(4 \mathrm{~N}\)
2 \(6 \mathrm{~N}\)
3 \(5 \mathrm{~N}\)
4 \(8 \mathrm{~N}\)