A push of a pull that one object exerts on another object is called a _____
What is a FORCE
100
A change in the postion of an object is called _____
What is MOTION
100
Friction between a thrown baseball the the air is called _____
What is AIR RESISTANCE
100
Newton's First Law says that an object's velocity will remain constant unless a force is applied to it.
True or False
What is True
100
When all of the forces on an object cancel one another out, the forces are said to be ________
What is BALANCED FORCES
200
When an object moves the same distance every second, it is mving at a ________
What is CONSTANT SPEED
200
The rate of change of an object's velocity is called ______
What is ACCELERATION
200
If each of the following items is the same distance from Earth, which will be pulled toward Earth with the greatest gravitational force?
a. a large truck b. a feather
c. a small car d. a ball
What is A. a large truck
200
What two forces can affect an object's velocity?
What is Speed and Direction
200
In cases where a certain force is either only partially cancelled or not cancelled at all by other forces, the force is said to be _______
What is UNBALANCED FORCE
300
A force that opposes motion between two objects that are touching is _______
What is FRICTION
300
How fast an object is moving is called _____
What is SPEED
300
A force that opposes motion between two surfaces that are touching is _______
What is FRICTION
300
A push or pull of an object is called a ____
What is FORCE
300
When one object applies a force to a second, we call this force the _______
What is ACTION
400
This term is used to describe the speed and the direction of a moving object...._________
What is VELOCITY
400
To calculate an object's speed, you need to know the time it took the object to move and the _______
a. direction of movement b. object's postion
c. velocity d. distance traveled
What is D---distance traveled
400
On the first serve, a tennis racket hits a tennis ball with a force of 1.8 newtons. On the second serve, the racket hits the same tennis ball with a force of 2.1 newtons. During which serve did the tennis ball have a greater acceleration? Explain
What is during the second serve because ther was an increase in the force resulting in an increase in the acceleration.
400
The tendency of an object to resist a change in its state of motion is called the object's ______
What is INERTIA
400
What is Newton's Third Law of Motion say: For every action, there is an _________________
What is EQUAL BUT OPPOSITE REACTION
500
An object resists change in speed or direction due to its _______
What is INERTIA
500
What is the formulat for determining Acceleration?
What is A = F divided by mass or A= F/M
500
What is the relationship between motion and force?
What is A NET FORCE IS NEEDED TO SET AN OBJECT IN MOTION OR TO SLOW DOWN OR STOP A MOVING OBJECT.
500
____________occurs when a force causes the speed of an object to decrease.
What is DECELERATION
500
Name 2 contact forces
Name 2 non-contact forces
What ar: push/ pull, friction, speed, acceleration
What are: gravity, magnetism, air resistance