1
This is what you call the starting point you choose to describe the location, or position, of an object.
What is a reference point?
This is the difference between the initial, or starting, position and the final position.
What is displacement
This is a measure of the change in velocity during a period of time.
Acceleration
This is a force that resists sliding motion of two surfaces that are touching.
Friction
Balanced forces acting on an object cause the object to accelerate. True or False
False
This is an objects’s distance and location from a reference point.
What is a position?
If you leave from one location, walk around the block, then end up in the same position you started, what is your total displacement?
0 meters
This is a push or pull on an object
Force
This is a simple model to understand systems of objects with an amount of applied forces.
Free body diagram.
According to Newton’s second law of motion, a larger force acting on an object causes greater _________ of the object.
Acceleration
If one car is going one way at 120 km/h, and another car passes going in the opposite direction going the same speed, is their velocity the same?
Yes
This is the measure of the distance an object travels in a given amount of time.
Speed
This is a push or pull on one object by another object that is touching it.
Contact Force
If one car is going one direction 50 km/h, and another car is going the opposite way also going 50 km/h, is their velocity the same?
No, the cars velocity is different because they are going in different directions.
Acceleration depends on what two factors?
A) mass and position
B) net force and mass
C) mass and velocity
B) net force and mass
This is the positive and negative direction.
What is reference direction?
This is the speed and direction of a moving object
Velocity
Distance, a reference point, and a reference ________ are all needed to determine the position of an object.
Direction
Forces that are equal in size but opposite in direction are called unbalanced forces. True or false?
False
Friction always acts in a direction ___________ to the direction of motion.
Opposite
This is the process of changing position
What is motion?
This is a quantity that has both magnitude and direction.
Vector
If you start at a point, go around the block, then end 4 meters from your starting point, what is your displacement?
4 meters
This law states that the acceleration of an object equals the net force on the object divided by the object’s mass.
Newton’s second law of motion
Two students are pushing a single box in the opposite direction (towards each other) with he same net force, but the box is not moving anywhere. Why is the box not moving?
The two students are both pushing with the same force so it will not move, one student needs to push with more net force for it to move