Lesson 1.2/1.3
What is velocity?
speed in a particular direction
Can an object have force?
No, the force can push or pull the object in any direction to change the velocity of the object.
What is the definition of infer?
To reach conclusion with evidences and reasoning.
Understanding a cause-and-effect relationship can help you with what?
infer what led to a particular result
What is force?
a push or pull that can change the motion of an object
What is a friction?
a force between an object and the surface it's moving over
What force can cause a great change in velocity?
Stronger force
What is the definition of exert?
to apply a force
What is the five way that an objects motion can change?
1. start moving
2. speeding up
3. slowing down
4. stop moving
5. change directions
Why is a force and an object different?
A force can pull or push the object, but the velocity can change depending on the speed of the object.
What is a force strength?
The measure of a human's exertion of force on the objects
What many amount of force will the pod need to be exerted to make it move the opposite direction?
Small amount of force
How can object starting moving?
hitting or pushing in any direction
How can the baseball move after it got hit with the bat.
It can move slower, faster, or even stop moving
Will the velocity of the book change as it slides across the surface with no friction, or the surface with friction?
The surface with no friction
Does the velocity of the pod change while it moves?
The velocity of the pod can change if it is changing its speed with the thruster.
How can the velocity of an object change?
It depends on the direction of the force exerted on that object
Why does an object that is sliding across the floor slow down quickly?
The floor could be a rough floor instead of a flat floor. The rough floor will cause friction for the object, which will cause the object to slow down while it's sliding across the ground.
Why won't the velocity of an object change when it slides across the surface with friction
The speed of the object won't change while it's moving across the rough surface.
Does the force and the motion of the pod has to be greater or smaller than the motion of the space station if the pod hit the space station and bounce to the opposite direction?
The force and motion of the pod has to be greater than the motion of the space station.