Contact Forces Review

What must happen for a collision to occur between 2 objects?

• The objects have to come into contact.

• The objects need to emit light.

• The objects have to be the same size.

• The objects must be damaged.

Is it always necessary for objects to be damaged in a collision?

• No, not always

• Yes, every time

• Only if they are moving fast

• Only if they are metal

What is NOT a must in a collision?

• Objects being damaged

• Objects making contact

• Energy being transferred

• Changes in motion

How can different variables affect a collision?

• They can cause different outcomes.

• They make collisions impossible.

• They stop all damage.

• They make objects identical.

What should we use to support our ideas in a scientific discussion?

• Evidence from investigations

• Opinions from friends

• Popular beliefs

• Random guesses

Which factor does NOT directly affect the outcome of a collision?

• Color of the object

• Mass of the object

• Speed of the object

• Material the object is made from

What is an example of a change we can see during a collision with damage?

• Bending and popping

• Energy transfer or movement

• Internal stress

• Particle-level changes

How does the speed of an object influence the damage in a collision?

• Higher speed increases the damage potential

• Higher speed reduces the damage potential

• Speed has no effect on collision damage

• Lower speed increases the damage

Which factor could influence whether an object gets damaged or not in a collision?

• Angle at which the object is struck

• Time of day

• Object’s color

• The object’s temperature

During a collision, what observable changes might indicate damage has occurred?

• Shattering and fracturing

• Energy transfer

• Internal stress

• Particle-level interactions