Collision Course
What do we call it when two objects bump into each other?
A collision
What can happen to an object when a force pushes or hits it?
It can change shape.
What can a push or pull do to an object?
It can make an object move.
Can a force make a moving object stop?
Yes
A student pushes a box, and the box moves. What caused the box to move?
A force.
A toy car hits a block. What happened to the two objects?
They collided
What happens to a sponge when you squeeze it?
It changes shape
A student pushes a toy car that is sitting still. What happens?
The car starts moving.
A rolling ball hits a wall and stops. What happened to the ball's motion?
The ball stopped moving.
A ball hits a wall and bounces back. What changed?
The ball's direction of motion changed.
Two balls collide, but neither ball changes shape. What do you observe?
The balls collided but the the shapes stayed the same.
A ball of clay is pushed onto a table and becomes flat. What happened?
The force changed the clay's shape.
A student pulls a wagon toward herself. What caused the wagon to move?
A force, a pull
A toy car is moving slowly. You push it, and it moves faster. What changed?
Its speed changed.
A student squeezes a foam ball and it becomes flat. What happened?
The force changed the balls shape.
A toy car rolls into a stack of blocks. The blocks fall over, but the car does not change shape. What happened during the collision?
The collision caused the blocks to move/fall over, but the car did not change shape.
A student pushes a lump of clay into a table. The clay becomes flat. What did the force do to the clay?
It changed its shape.
A student pushes a toy car that is sitting still. What happens to the car, and why?
The car starts moving because the push is a force.
A rolling ball hits a wall and stops. What did the wall's force do to the ball?
It changed the balls motion by making it stop.
A student drops a rubber ball. It hits the floor and bounces back up. What happened when the ball collided with the floor?
The collision changed the ball's motion/direction.
Two toy cars crash into each other. Car A stops, and Car B moves in a different direction. Neither car changes shape. What did the collision change?
The collision changed the cars' motion and direction, but not their shape.
Two objects collide. One object bends and changes shape, while the other stays the same. What can you conclude?
The collision caused one object to change shape, but not the other.
A soccer ball is rolling across the grass. A student kicks it from the side, causing it to move in a different direction. What did the force change?
The force changed the ball's direction of motion.
A toy car is rolling slowly. A student pushes it from behind, and it begins moving faster. What did the force change?
The force changed the cars speed.
A student pushes a cardboard box into a wall. The box stops and becomes slightly dented. What are two things the force caused?
It changed the box's motion and changed its shape.