Momentum and impulse

1

In which type of collision is total kinetic energy of the system conserved?

elastic collision

inelastic collision

1

If both the mass and velocity of an object are constant, what can you tell about its impulse?

Its impulse would be constant

Its impulse would be increasing

Its impulse would be decreasing

Its impulse would be zero

1

Two objects collide with each other and come to a rest.
How can you use the equation of conservation of momentum to describe this situation?

m_1iv_1i + m_2iv_2i = 0

m_1iv_1i − m_2iv_2i = 0

m_1iv_1i + m_2iv_2i = m_1fv_2f

3

Mmuae Afoforo a Wobɛpaw:

The change in momentum

The sum of mass and velocity

The rate of change in momentum

The product of mass and velocity

1

Why does it hurt less when you fall on a softer surface?

The softer surface decreases the duration of the impact, thereby increasing the effect of the force.

The softer surface increases the duration of the impact, thereby reducing the effect of the force.

The softer surface increases the duration of the impact, thereby increasing the effect of the force.

The softer surface decreases the duration of the impact, thereby reducing the effect of the force.

1

Momentum is conserved in ....

an elastic collision of two balls

an inelastic collision of two balls

in the absence of an external force

in all of these examples

1

A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the wall. Which one of these objects experiences the greater momentum change?

The clay

The ball

Both of them experience the same non-zero momentum change

Both of them experience zero momentum change

1

Can a lighter object have more momentum than a heavier one?

No, because momentum is independent of the velocity of the object.

Yes, if the lighter object’s velocity is considerably low.

Yes, if the lighter object’s velocity is considerably high.

No, because momentum is independent of the mass of the object.

Momentum and impulse

In which type of collision is total kinetic energy of the system conserved?

If both the mass and velocity of an object are constant, what can you tell about its impulse?

Two objects collide with each other and come to a rest. How can you use the equation of conservation of momentum to describe this situation?

Why does it hurt less when you fall on a softer surface?

Momentum is conserved in ....

A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the wall. Which one of these objects experiences the greater momentum change?

Can a lighter object have more momentum than a heavier one?

In which type of collision is total kinetic energy of the system conserved?

If both the mass and velocity of an object are constant, what can you tell about its impulse?

Two objects collide with each other and come to a rest. How can you use the equation of conservation of momentum to describe this situation?

Why does it hurt less when you fall on a softer surface?

Momentum is conserved in ....

A rubber ball and a lump of clay have equal mass. They are thrown with equal speed against a wall. The ball bounces back with nearly the same speed with which it hit. The clay sticks to the wall. Which one of these objects experiences the greater momentum change?

Can a lighter object have more momentum than a heavier one?

Two objects collide with each other and come to a rest.
How can you use the equation of conservation of momentum to describe this situation?

Two objects collide with each other and come to a rest.
How can you use the equation of conservation of momentum to describe this situation?