Vocabulary
Motion
Forces
Forces and Motion
Net Force
100
A push or pull on something.
What is force?
100
The tendency of an object to resist a change in motion.
What is intertia?
100
Mrs. Kunkel rolled a marble across the floor to Mrs. Plummer What force started the ball rolling? (balanced force, unbalanced force, gravity, friction)
What is an unbalanced force?
100
Which of the following is an example of balanced forces? A. Sitting on a chair B. Kicking a soccer ball C. An apple falling onto the ground D. A rocket taking off
What is A - Sitting on a chair
100
What is 700 N?
200
Force that acts on an object when it rubs against another object or material.
What is friction?
200
Which will experience less acceleration when the same force is applied, a 100lb object or a 25lb object?
What is an 100lb object?
200
This is the force that acts on a space shuttle as it accelerates toward Earth.
What is gravity?
200
Which of the following forces slows objects down?
A. Friction B. Gravitational C. Magnetic D. Unbalanced
What is Friction
200
You and your brother are pushing a car with a dead battery with forces of 20 N and 25 N in the same direction. What is the net force applied on the car?
What is 45 N?
300
An interaction between a moving object and air molecules.
What is air resistance?
300
Which will experience more acceleration when the same force is applied, a 10kg object or a 5kg object?
What is the 5kg object?
300
Friction is a force caused by___________.
What is surfaces rubbing against one another?
300
The first part of Newton's First Law of Motion states: An object ___ ______ tends to _____ ____ ____ unless acted upon by an ________ _______.
What is at rest, remain at rest, and unbalanced force?
300
baby deer is trying to run for the first time. It is running with 50 N of force to the left. The mother deer is helping the baby to the left with a force of 25 N. What is the net force for the deer?
What is 75 N?
400
Mass times acceleration
What is force?
400
What is needed to give a boulder acceleration?
A large force that changes the boulders speed/direction.
400
Jackson was investigating the use of magnets to move objects. He observed that some objects moved toward the magnets without having to touch them. Jackson's observation can be described by saying that the magnets have what type of force?
What is non-contact force?
400
The second half of Newton's First Law of Motion states: An object in _______ in a straight line tends to ______ _____ _______ in a straight line unless acted upon by _____________ __________.
What is motion, stay in motion, another force (or outside force)?
400
A brother is pulling a toy from his sister with a force of 6 N. The sister is pulling back with a force of 8 N.
Who gets the toy?
What is the net force?
What is the sister and 2 N?
500
This exists when all the forces acting on an object result in the object staying at rest or moving at a constant speed in the same direction.
What is balanced force?
500
Fill in the blank: For ______ to occur on this object, a force must act upon it.
What is motion
500
Mrs. Kunkel's 5th grade class and Mrs. Plummer's 6th grade class challenged each other to a game of tug-of-war. Each class grabbed onto different ends of the long rope. Mrs. Plummer blew a whistle and both teams began to pull and pull. Neither team could pull the other team over. Give a statement about the forces involved in the tug-of-war between the two 5th grade classrooms. "The forces were ___________ because _______________."
What is (something like) "the forces were balanced because the teams could not pull each other over"?
500
You can describe an object sitting at rest on the ground as follows: The ______ of the object on the ground is _________ with the ________ of the ground on the object.
What is force, balanced, and force?
500
What letter is used as the unit of measurement when calculating net force?
What is the letter "N"?