Which of the following is an elastic collision?(1 point)

Question

Responses

Two balls of modeling clay hitting each other.
Two balls of modeling clay hitting each other.

An apple falling to Earth from a tree.
An apple falling to Earth from a tree.

A ping-pong paddle hitting a ball.
A ping-pong paddle hitting a ball.

Two hands clapping.

Which of the following is an inelastic collision?(1 point)
Responses

A marble colliding with another marble.
A marble colliding with another marble.

A baseball bat hitting a ball.
A baseball bat hitting a ball.

A hockey puck colliding with the net.
A hockey puck colliding with the net.

A mosquito landing on someone’s arm.

Which tool does its work through collision?(1 point)
Responses

a hammer
a hammer

a knife
a knife

a wrench
a wrench

a screwdriver
a screwdriver

Answer 1

Which of the following is an elastic collision?

• A ping-pong paddle hitting a ball.
  Elastic collisions are defined as collisions in which both kinetic energy and momentum are conserved. A ping-pong paddle hitting a ball is a better example of an elastic collision compared to the other options, as it can demonstrate these conservation laws well due to the bouncing behavior of the ball.

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Which of the following is an inelastic collision?

• A baseball bat hitting a ball.
  Inelastic collisions occur when the kinetic energy is not conserved (some is transformed into other forms of energy, often heat or deformation). A baseball bat hitting a ball typically results in some energy absorbed by the bat and the deformation of the ball during the impact.

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Which tool does its work through collision?

• A hammer.
  A hammer does its work through collision, as it strikes an object (like a nail) to drive it into a surface or to break something apart. The force is applied through the impact of the hammer colliding with the target.