Collisions
Physics ⇒ Mechanics
Collisions starts at 10 and continues till grade 12.
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See sample questions for grade 10
Describe what happens in a two-dimensional collision.
Describe what happens to the kinetic energy in a perfectly inelastic collision.
Describe what is meant by a 'one-dimensional collision'.
Explain the difference between elastic and inelastic collisions.
A 0.2 kg ball moving at 5 m/s collides elastically with a 0.2 kg ball at rest. What is the velocity of the first ball after the collision?
A 1 kg ball moving at 4 m/s collides with a 2 kg ball moving at -2 m/s. If the collision is perfectly elastic, what is the velocity of the 1 kg ball after the collision?
A 1.5 kg ball moving at 3 m/s collides with a 0.5 kg ball at rest. If the collision is perfectly inelastic, what is their velocity after the collision?
A 2 kg ball moving at 3 m/s collides head-on with a stationary 1 kg ball. If the collision is perfectly elastic, what is the velocity of the 1 kg ball after the collision?
Which of the following best describes a perfectly elastic collision? (1) Objects stick together (2) Only momentum is conserved (3) Both momentum and kinetic energy are conserved (4) Only kinetic energy is conserved
Which of the following best describes a perfectly inelastic collision? (1) Objects bounce off each other (2) Objects stick together (3) Only kinetic energy is conserved (4) Both objects come to rest
Which of the following is always true for a closed system during a collision? (1) Total mass is conserved (2) Total momentum is conserved (3) Total kinetic energy is conserved (4) Both (1) and (2)
Which of the following is an example of an inelastic collision? (1) Two billiard balls bouncing off each other (2) A clay ball hitting the ground and sticking (3) A rubber ball bouncing off the floor (4) Two ice skaters gliding past each other without touching
Fill in the blank: In a perfectly inelastic collision, the colliding objects ______ after the collision.
Fill in the blank: The change in momentum is called ______.
Fill in the blank: The formula for momentum is p = ______ × velocity.
Fill in the blank: The impulse experienced by an object is equal to the change in ______.
Is it possible for the total kinetic energy of a system to increase after a collision?
Is it possible for two objects to move in the same direction after a perfectly elastic collision?
Is the following statement true or false? 'In a perfectly inelastic collision, the objects move together with a common velocity after the collision.'
Is the following statement true or false? 'The direction of momentum is always the same as the direction of velocity.'
