Vocabulary
A result of a change that happens because of an event or process.
effect
An event or process that leads to a result or change
cause
If a ball is sitting still and a force is exerted on it from any direction, what change in velocity would happen?
The ball would start moving.
If one person shoves another person, and the person shoved falls over, is this a balance or unbalanced force?
Unbalanced
A ball is rolling. It isn't hit by anything and it doesn't run into anything, but it stops after a few seconds. Why?
Friction
To apply a force
Exert
A ________ is required to change the velocity of an object.
Force
If a ball is going left at a speed of 3 centimetres per second, and a force is exerted on it with the strength of 10 newtons going left, what change in velocity would happen?
The ball would speed up.
If two kids are sitting on a see-saw, and they are sitting at an equal height, is this a balanced or unbalanced force?
Balanced
What is an unbalanced force?
Two forces acting on an object that are not equal in size.
A push or pull than can change the motion of an object.
Force
How an object changes ________ depends on the direction of the _______ exerted on that object.
Velocity, force
If a ball is going left at a speed of 3 centimetres per second, and a force is exerted on it with the strength of 30 newtons going right, what change in velocity would happen?
The ball would stop
A ball is rolling at a speed of 4 centimetres per second and a force is exerted on it from the opposite direction. The ball slows down to a speed of 2 centimetres per second. How strong was the force?
20 newtons
What is a balanced force?
Two forces acting on an object that are equal in size and act in opposite directions.
What is friction?
a force between an object and the surface it's moving over.
A stronger _______ can cause a greater change in ______
force, velocity
If a ball is going left at a speed of 3 centimetres per second, and a force is exerted on it with the strength of 20 newtons going right, what change in velocity would happen?
The ball would slow down
If a person is trying to push something heavy, and neither thing moves, what kind of force is this?
Balanced
In claim one, where the thrusters are stronger than needed, what changed in velocity occurs?
A change in direction
What is velocity?
Speed in a particular direction.
Understanding a ________ relationship can help you infer what led to a particular result.
Cause-and-Effect
If a ball is going left at a speed of 3 centimetres per second, and a force is exerted on it with the strength of 40 newtons going right, what change in velocity would happen?
A change in direction
If someone pushes a box, and it moves, what kind of force is this?
Unbalanced
In claim two, where the thrusters are weaker than needed, what change in velocity occurs?
The pod slows down