COLLISIONS
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Work, Energy and Power

268616 Choose the false statement

1 In a perfect elastic collision the relative velocity of approach is equal to the relative velocity of separation
2 In an inelastic collision the relative velocity of approach is less than the relative velocity of separation
3 In an inelastic collision the relative velocity of separation is less than the relative velocity of approach
4 In perfect inelastic collision relative velocity of separation is zero
Work, Energy and Power

268678 A \(6 \mathrm{~kg}\) mass travelling at \(2.5 \mathrm{~ms}^{-1}\) collides head on with a stationary \(4 \mathrm{~kg}\) mass. After the collision the \(6 \mathrm{~kg}\) mass travels in its original direction with a speed of \(1 \mathrm{~ms}^{-1}\). The final velocity of \(4 \mathbf{~ k g}\) mass is

1 \(1 \mathrm{~ms}^{-1}\)
2 \(2.25 \mathrm{~ms}^{-1}\)
3 \(2 \mathrm{~ms}^{-1}\)
4 \(0 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268679 A body of mass \(10 \mathrm{~kg}\) moving with a velocity of \(5 \mathrm{~ms}^{-1}\) hits a body of \(1 \mathbf{~ g m}\) at rest. The velocity of the second body after collision, assuming it to be perfectly elastic is

1 \(10 \mathrm{~ms}^{-1}\)
2 \(5 \mathrm{~ms}^{-1}\)
3 \(15 \mathrm{~ms}^{-1}\)
4 \(0.10 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268680 A block of mass \(1 \mathrm{~kg}\) moving with a speed of \(4 \mathrm{~ms}^{-1}\), collides with another block of mass 2 \(\mathrm{kg}\) which is at rest. The lighter block comes to rest after collision. The loss in \(\mathrm{KE}\) of the system is

1 \(8 \mathrm{~J}\)
2 \(4 \times 10^{-7} \mathrm{~J}\)
3 \(4 \mathrm{~J}\)
4 \(0 \mathrm{~J}\)
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Work, Energy and Power

268616 Choose the false statement

1 In a perfect elastic collision the relative velocity of approach is equal to the relative velocity of separation
2 In an inelastic collision the relative velocity of approach is less than the relative velocity of separation
3 In an inelastic collision the relative velocity of separation is less than the relative velocity of approach
4 In perfect inelastic collision relative velocity of separation is zero
Work, Energy and Power

268678 A \(6 \mathrm{~kg}\) mass travelling at \(2.5 \mathrm{~ms}^{-1}\) collides head on with a stationary \(4 \mathrm{~kg}\) mass. After the collision the \(6 \mathrm{~kg}\) mass travels in its original direction with a speed of \(1 \mathrm{~ms}^{-1}\). The final velocity of \(4 \mathbf{~ k g}\) mass is

1 \(1 \mathrm{~ms}^{-1}\)
2 \(2.25 \mathrm{~ms}^{-1}\)
3 \(2 \mathrm{~ms}^{-1}\)
4 \(0 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268679 A body of mass \(10 \mathrm{~kg}\) moving with a velocity of \(5 \mathrm{~ms}^{-1}\) hits a body of \(1 \mathbf{~ g m}\) at rest. The velocity of the second body after collision, assuming it to be perfectly elastic is

1 \(10 \mathrm{~ms}^{-1}\)
2 \(5 \mathrm{~ms}^{-1}\)
3 \(15 \mathrm{~ms}^{-1}\)
4 \(0.10 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268680 A block of mass \(1 \mathrm{~kg}\) moving with a speed of \(4 \mathrm{~ms}^{-1}\), collides with another block of mass 2 \(\mathrm{kg}\) which is at rest. The lighter block comes to rest after collision. The loss in \(\mathrm{KE}\) of the system is

1 \(8 \mathrm{~J}\)
2 \(4 \times 10^{-7} \mathrm{~J}\)
3 \(4 \mathrm{~J}\)
4 \(0 \mathrm{~J}\)
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Work, Energy and Power

268616 Choose the false statement

1 In a perfect elastic collision the relative velocity of approach is equal to the relative velocity of separation
2 In an inelastic collision the relative velocity of approach is less than the relative velocity of separation
3 In an inelastic collision the relative velocity of separation is less than the relative velocity of approach
4 In perfect inelastic collision relative velocity of separation is zero
Work, Energy and Power

268678 A \(6 \mathrm{~kg}\) mass travelling at \(2.5 \mathrm{~ms}^{-1}\) collides head on with a stationary \(4 \mathrm{~kg}\) mass. After the collision the \(6 \mathrm{~kg}\) mass travels in its original direction with a speed of \(1 \mathrm{~ms}^{-1}\). The final velocity of \(4 \mathbf{~ k g}\) mass is

1 \(1 \mathrm{~ms}^{-1}\)
2 \(2.25 \mathrm{~ms}^{-1}\)
3 \(2 \mathrm{~ms}^{-1}\)
4 \(0 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268679 A body of mass \(10 \mathrm{~kg}\) moving with a velocity of \(5 \mathrm{~ms}^{-1}\) hits a body of \(1 \mathbf{~ g m}\) at rest. The velocity of the second body after collision, assuming it to be perfectly elastic is

1 \(10 \mathrm{~ms}^{-1}\)
2 \(5 \mathrm{~ms}^{-1}\)
3 \(15 \mathrm{~ms}^{-1}\)
4 \(0.10 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268680 A block of mass \(1 \mathrm{~kg}\) moving with a speed of \(4 \mathrm{~ms}^{-1}\), collides with another block of mass 2 \(\mathrm{kg}\) which is at rest. The lighter block comes to rest after collision. The loss in \(\mathrm{KE}\) of the system is

1 \(8 \mathrm{~J}\)
2 \(4 \times 10^{-7} \mathrm{~J}\)
3 \(4 \mathrm{~J}\)
4 \(0 \mathrm{~J}\)
NEET DIGITAL LIBRARY
Work, Energy and Power

268616 Choose the false statement

1 In a perfect elastic collision the relative velocity of approach is equal to the relative velocity of separation
2 In an inelastic collision the relative velocity of approach is less than the relative velocity of separation
3 In an inelastic collision the relative velocity of separation is less than the relative velocity of approach
4 In perfect inelastic collision relative velocity of separation is zero
Work, Energy and Power

268678 A \(6 \mathrm{~kg}\) mass travelling at \(2.5 \mathrm{~ms}^{-1}\) collides head on with a stationary \(4 \mathrm{~kg}\) mass. After the collision the \(6 \mathrm{~kg}\) mass travels in its original direction with a speed of \(1 \mathrm{~ms}^{-1}\). The final velocity of \(4 \mathbf{~ k g}\) mass is

1 \(1 \mathrm{~ms}^{-1}\)
2 \(2.25 \mathrm{~ms}^{-1}\)
3 \(2 \mathrm{~ms}^{-1}\)
4 \(0 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268679 A body of mass \(10 \mathrm{~kg}\) moving with a velocity of \(5 \mathrm{~ms}^{-1}\) hits a body of \(1 \mathbf{~ g m}\) at rest. The velocity of the second body after collision, assuming it to be perfectly elastic is

1 \(10 \mathrm{~ms}^{-1}\)
2 \(5 \mathrm{~ms}^{-1}\)
3 \(15 \mathrm{~ms}^{-1}\)
4 \(0.10 \mathrm{~ms}^{-1}\)
Work, Energy and Power

268680 A block of mass \(1 \mathrm{~kg}\) moving with a speed of \(4 \mathrm{~ms}^{-1}\), collides with another block of mass 2 \(\mathrm{kg}\) which is at rest. The lighter block comes to rest after collision. The loss in \(\mathrm{KE}\) of the system is

1 \(8 \mathrm{~J}\)
2 \(4 \times 10^{-7} \mathrm{~J}\)
3 \(4 \mathrm{~J}\)
4 \(0 \mathrm{~J}\)
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