Vocabulary
A push or pull that can change the motion of an object.
Force
A stronger ______ can cause a greater change in ________
force, velocity
If a grain of sand hits a boulder, which will have a greater change in velocity?
The grain of sand
If two cars with different masses crash into each other, both going 50 mph, which one experiences a greater force?
They both experience the same force.
Choose the correct word to make the sentence true.
Objects with less mass change velocity more/less easily that more massive objects.
More
To reach a conclusion using evidence and reasoning
Infer
Understanding a ________ relationship can help you _____ what led to a particular result.
cause-and-effect, infer
If a bowling ball hits a bowling pin, which will have a greater change in velocity?
the bowling pin
A girl pushes one blue rolling chair and one red rolling chair. They have the same mass. The blue chair was moving 3cm/s before the push and slowed down to 1cm/s after the push. The red chair was moving 5cm/s before the push, and slowed down to 1cm/s after the push. Which one experienced a greater force?
The red chair.
Newton's 1st law is also called _______
The law of inertia
A force between an object and the surface it's moving over.
Friction
If the same ________ force is exerted on two objects, but the objects have different ______, the object with ____ mass will have a greater change in velocity.
Strength, masses, less
If a bowling ball runs into an empty cereal box, which will have a greater change in velocity?
The cereal box.
If a bowling ball hits a bowling pin, which one experiences a greater force?
They both experience the same strength force, but in opposite directions.
If the pod has less mass than the space station, which one had a greater change in velocity after the collision?
The pod.
What is mass?
The amount of matter that makes up an object.
When two objects _______, a force is exerted on each object. The two forces are exerted in ________ direction(s), but they are the same ________.
collide, opposite, strength
If both a toy car and a bowling ball had the same strength force exerted on them, which one would have a greater change in velocity?
The toy car
A bowling ball and a soccer ball are sitting on the ground. A force is exerted on each of them. They both start moving at 2cm/s. Which one was exerted on by a greater force?
The bowling ball.
Objects at rest tend to ______
Stay at rest.
What is a collision?
The moment when two objects hit each other.
Even though the _____ exerted on each object in a collision is the same ________, if the objects have different ______, their changes in velocity will be different.
force, strength, masses
If a car crashed into a garbage truck, which one would have a greater change in velocity?
The car
If a grain of sand hits a boulder, which one will experience a greater force?
They will both experience the same strength force, but the sand will have a greater change in velocity because it's less massive.
Objects in motion tend to _______
Stay in motion.