Collisions
Physics ⇒ Mechanics
Collisions starts at 10 and continues till grade 12.
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See sample questions for grade 12
Define the coefficient of restitution.
Explain the difference between elastic and inelastic collisions.
If the coefficient of restitution is 0, what type of collision has occurred?
If two identical balls collide head-on elastically, what will be the velocities of the balls after the collision if their initial velocities were v and -v?
A 0.1 kg ball moving at 5 m/s strikes a stationary 0.1 kg ball. If the collision is perfectly elastic, what is the velocity of the second ball after the collision?
A 0.2 kg ball moving at 10 m/s collides with a wall and rebounds with a velocity of -8 m/s. What is the coefficient of restitution?
A 0.5 kg ball moving at 6 m/s collides with a stationary 0.5 kg ball in a perfectly elastic collision. What is the velocity of the first ball after the collision?
A 1 kg ball moving at 2 m/s collides with a 2 kg ball moving at -1 m/s. If the collision is perfectly elastic, what is the velocity of the 1 kg ball after the collision?
Which of the following best describes an inelastic collision?
(1) Both momentum and kinetic energy are conserved
(2) Only momentum is conserved
(3) Only kinetic energy is conserved
(4) Neither momentum nor kinetic energy is conserved
Which of the following is always conserved in an isolated system during a collision?
(1) Kinetic energy
(2) Momentum
(3) Both kinetic energy and momentum
(4) Neither kinetic energy nor momentum
Which of the following is NOT a type of collision?
(1) Elastic
(2) Inelastic
(3) Explosive
(4) Perfectly inelastic
Which of the following quantities is not necessarily conserved in a collision?
(1) Linear momentum
(2) Kinetic energy
(3) Total energy
(4) Mass
In a collision, the change in momentum of an object is called _______.
In a collision, the time interval during which the force acts is called the _______ of the collision.
In a two-body collision, the total linear momentum of the system is conserved if _______.
The coefficient of restitution for a perfectly elastic collision is _______.
Is it possible for the total kinetic energy of a system to increase after a collision in an isolated system?
Is it possible for two objects to move apart after a perfectly inelastic collision?
Is the total kinetic energy of a system always conserved in a collision?
State whether the following statement is true or false: In a perfectly inelastic collision, the colliding bodies stick together after the collision.
