Momentum and Collisions Quiz

What does it mean for momentum to be conserved in an explosion?

• The momentum of individual objects increases.

• Momentum is lost during the explosion.

• Momentum is transferred to the surroundings.

• The total momentum before and after the explosion remains the same.

In the tennis ball cannon experiment, what does Newton's third law imply about the forces on the cannon and the ball?

• The forces are unequal and act in the same direction.

• The forces are equal and opposite.

• The forces are equal and act in the same direction.

• The forces are unequal and opposite.

How is the change in momentum of the cannon related to the change in momentum of the ball in the tennis ball cannon experiment?

• They are both zero.

• They are equal and opposite.

• They are unrelated.

• They are equal and in the same direction.

What is the purpose of using momentum tables in analyzing explosions?

• To determine the speed of objects after the explosion.

• To calculate the energy lost in the explosion.

• To measure the force exerted during the explosion.

• To track the changes in momentum of individual objects and the system.

In a system where one object has half the mass of another, how does its velocity compare after an explosion?

• It moves with half the velocity.

• It moves with the same velocity.

• It moves with twice the velocity.

• It does not move.

If a blue cart has one-third the mass of a red cart, what is its velocity compared to the red cart after an explosion?

• The same velocity as the red cart.

• Three times the velocity of the red cart.

• One-third the velocity of the red cart.

• It remains stationary.

In the tennis ball cannon problem, what is the final velocity of the ball if the cannon recoils at 2.3 m/s?

• 130 m/s

• 55 m/s

• 2.3 m/s

• 23 m/s

What is the first step in solving a physics word problem involving momentum conservation?

• Guess the final velocities.

• Write down known values and what you are solving for.

• Calculate the force exerted.

• Draw a diagram of the system.

In the figure skater example, what is the velocity of the male skater after the push-off if the female skater moves at 3.11 m/s?

• 3.11 m/s

• 2.14 m/s

• 0 m/s

• 1.55 m/s

What is the relationship between mass and velocity in explosions according to the examples given?

• Velocity is always constant.

• Mass does not affect velocity.

• Mass and velocity are inversely proportional.

• Mass and velocity are directly proportional.