Vocabulary
The tendency of an object to resist a change in motion.
What is intertia?
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?
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
Which will experience less acceleration when the same force is applied, a 100lb object or a 25lb object?
What is an unbalanced force?
This is the force that acts on a space shuttle as it accelerates toward Earth.
What is gravity?
Which of the following forces slows objects down?
A. Friction B. Gravitational C. Magnetic D. Unbalanced
What is Friction
What is contact force?
Which will experience more acceleration when the same force is applied, a 10kg object or a 5kg object?
What is the 5kg object?
Friction is a force caused by___________.
What is surfaces rubbing against one another?
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?
distance divided by speed
What is time?
What is needed to give a boulder acceleration?
A large force that changes the boulders speed/direction.
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?
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)?
Fill in the blank: For ______ to occur on this object, a force must act upon it.
What is motion
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"?
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?