Collisions
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PHXI06:WORK ENERGY AND POWER

355290 Two identical particles of mass \(m\) moving in opposite directions collide elastically with velocities \(v\) and \(2 v\) respectively. The velocity of first particle after collision is:

1 1.1 \(v\)
2 \(v\)
3 1.5 \(v\)
4 2 \(v\)
PHXI06:WORK ENERGY AND POWER

355291 An alpha-particle of mass \(m\) suffers 1dimensional elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing, \(64 \%\) of its initial kinetic energy. The mass of the nucleus is

1 4 \(m\)
2 1.5 \(m\)
3 3.5 \(m\)
4 2 \(m\)
JEE - 2019
PHXI06:WORK ENERGY AND POWER

355292 In perfectly inelastic collisions in one dimensions, the relative velocity of the bodies:

1 Before impact is equal to that after impact
2 Before impact it is zero
3 Is characterized by none of the above
4 After impact is zero
PHXI06:WORK ENERGY AND POWER

355293 A bullet of mass \(m\) moving with velocity \(v\) strikes a block of mass \(M\) at rest and gets embedded into it. The kinetic energy of the composite block will be

1 \(\dfrac{1}{2} m v^{2} \times \dfrac{(M+m)}{M}\)
2 \(\dfrac{1}{2} m v^{2} \times \dfrac{M}{(m+M)}\)
3 \(\dfrac{1}{2} M v^{2} \times \dfrac{m}{(m+M)}\)
4 \(\dfrac{1}{2} m v^{2} \times \dfrac{m}{(m+M)}\)
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PHXI06:WORK ENERGY AND POWER

355290 Two identical particles of mass \(m\) moving in opposite directions collide elastically with velocities \(v\) and \(2 v\) respectively. The velocity of first particle after collision is:

1 1.1 \(v\)
2 \(v\)
3 1.5 \(v\)
4 2 \(v\)
PHXI06:WORK ENERGY AND POWER

355291 An alpha-particle of mass \(m\) suffers 1dimensional elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing, \(64 \%\) of its initial kinetic energy. The mass of the nucleus is

1 4 \(m\)
2 1.5 \(m\)
3 3.5 \(m\)
4 2 \(m\)
JEE - 2019
PHXI06:WORK ENERGY AND POWER

355292 In perfectly inelastic collisions in one dimensions, the relative velocity of the bodies:

1 Before impact is equal to that after impact
2 Before impact it is zero
3 Is characterized by none of the above
4 After impact is zero
PHXI06:WORK ENERGY AND POWER

355293 A bullet of mass \(m\) moving with velocity \(v\) strikes a block of mass \(M\) at rest and gets embedded into it. The kinetic energy of the composite block will be

1 \(\dfrac{1}{2} m v^{2} \times \dfrac{(M+m)}{M}\)
2 \(\dfrac{1}{2} m v^{2} \times \dfrac{M}{(m+M)}\)
3 \(\dfrac{1}{2} M v^{2} \times \dfrac{m}{(m+M)}\)
4 \(\dfrac{1}{2} m v^{2} \times \dfrac{m}{(m+M)}\)
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PHXI06:WORK ENERGY AND POWER

355290 Two identical particles of mass \(m\) moving in opposite directions collide elastically with velocities \(v\) and \(2 v\) respectively. The velocity of first particle after collision is:

1 1.1 \(v\)
2 \(v\)
3 1.5 \(v\)
4 2 \(v\)
PHXI06:WORK ENERGY AND POWER

355291 An alpha-particle of mass \(m\) suffers 1dimensional elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing, \(64 \%\) of its initial kinetic energy. The mass of the nucleus is

1 4 \(m\)
2 1.5 \(m\)
3 3.5 \(m\)
4 2 \(m\)
JEE - 2019
PHXI06:WORK ENERGY AND POWER

355292 In perfectly inelastic collisions in one dimensions, the relative velocity of the bodies:

1 Before impact is equal to that after impact
2 Before impact it is zero
3 Is characterized by none of the above
4 After impact is zero
PHXI06:WORK ENERGY AND POWER

355293 A bullet of mass \(m\) moving with velocity \(v\) strikes a block of mass \(M\) at rest and gets embedded into it. The kinetic energy of the composite block will be

1 \(\dfrac{1}{2} m v^{2} \times \dfrac{(M+m)}{M}\)
2 \(\dfrac{1}{2} m v^{2} \times \dfrac{M}{(m+M)}\)
3 \(\dfrac{1}{2} M v^{2} \times \dfrac{m}{(m+M)}\)
4 \(\dfrac{1}{2} m v^{2} \times \dfrac{m}{(m+M)}\)
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PHXI06:WORK ENERGY AND POWER

355290 Two identical particles of mass \(m\) moving in opposite directions collide elastically with velocities \(v\) and \(2 v\) respectively. The velocity of first particle after collision is:

1 1.1 \(v\)
2 \(v\)
3 1.5 \(v\)
4 2 \(v\)
PHXI06:WORK ENERGY AND POWER

355291 An alpha-particle of mass \(m\) suffers 1dimensional elastic collision with a nucleus at rest of unknown mass. It is scattered directly backwards losing, \(64 \%\) of its initial kinetic energy. The mass of the nucleus is

1 4 \(m\)
2 1.5 \(m\)
3 3.5 \(m\)
4 2 \(m\)
JEE - 2019
PHXI06:WORK ENERGY AND POWER

355292 In perfectly inelastic collisions in one dimensions, the relative velocity of the bodies:

1 Before impact is equal to that after impact
2 Before impact it is zero
3 Is characterized by none of the above
4 After impact is zero
PHXI06:WORK ENERGY AND POWER

355293 A bullet of mass \(m\) moving with velocity \(v\) strikes a block of mass \(M\) at rest and gets embedded into it. The kinetic energy of the composite block will be

1 \(\dfrac{1}{2} m v^{2} \times \dfrac{(M+m)}{M}\)
2 \(\dfrac{1}{2} m v^{2} \times \dfrac{M}{(m+M)}\)
3 \(\dfrac{1}{2} M v^{2} \times \dfrac{m}{(m+M)}\)
4 \(\dfrac{1}{2} m v^{2} \times \dfrac{m}{(m+M)}\)
For More Updates join with Us
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