Study Guide for Do Now Quiz 6 (collisions)

Which of the following best describes a collision?

• Two objects moving in the same direction without touching each other.

• Two objects coming into contact with each other while moving.

• One object staying still while another moves away from it.

• Two objects being near each other without making contact.

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Which of the following is an example of a collision where objects are NOT damaged?

• A car hitting a tree and leaving a dent.

• A glass falling on the floor and breaking.

• A plate shattering when dropped on a table.

• A soccer ball bouncing off a wall.

Which factor is least likely to affect whether an object is damaged in a collision?

• The time of day the collision happens.

• The speed of the objects involved.

• The material the objects are made of.

• The shape of the objects involved.

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Why do some collisions cause damage while others do not?

• Collisions cause damage when both objects are moving towards each other.

• Collisions cause damage when there is greater force or weaker materials.

• Objects only get damaged if a moving object collides with a nonmoving object.

• Objects only get damaged if a moving object collides with a fragile nonmoving object.

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Imagine two toy cars rolling toward each other on a track. What will happen when they collide?

• both cars will stop

• one car will slow down and one will speed up

• both cars will change direction

• more information about the cars and their motion is needed

• one car will stop and one will change direction

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During a soccer game, a ball rolls across the field and is kicked by a player. What happens to the motion of the ball after the collision?

• The ball remains in its original state of motion.

• The ball changes speed and direction.

• The ball moves in the same direction but slower.

• The ball stops moving completely.

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When a car crashes into a wall at a low speed, the front bumper bends inward. What does this example show about the effects of a collision?

• Collisions always destroy objects completely.

• Collisions have no effect if the speed is low.

• Collisions can change the shape of objects involved.

• Collisions only change the motion of objects.

When a moving object collides with a non-moving object, the moving object will (a)   energy.

• lose

• gain

• neither gain nor lose

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During a collision, when are forces involved?

• only to get an object moving

• at the moment of impact

• after the damage is done

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Which collision will most likely result in temporary changes in the shapes of the objects?

• A cart with clay hitting a wall

• Two carts with metal rings colliding

• Dropping a marble onto a candy glass

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