Vocab
the type of force that causes an object to change its motion
What is "an unbalanced force"?
Finish the phrase: "An object in motion stays in motion and...
What is "an object at rest stays at rest unless acted on by an unbalanced force"?
the formula for Newton's 2nd Law
What is "F=ma"?
Newton's 3rd Law states that...
What is "every action has an equal and opposite reaction"?
define gravity
What is "the force that pulls two objects toward one another, generally downward"?
In the following example, what is the unbalanced force: A car is driving down the street, but comes to an abrupt stop when it hits a tree.
what is "the tree"
Finish Newton's 2nd Law: Acceleration occurs when...
What is "a force acts on a mass"?
If you hit a brick wall at 5N how much N would be reflected back
5N
a push or pull
What is "force"?
What wail happen if you throw a ball in space
it will not stop until an unbalanced force acts upon it
If a force of 10N occurs on a mass of 2kg, what must be the acceleration? (remember to use appropriate units!)
What is "5 m/s/s"?
A swimmer pushes off the side of the pool and is propelled forward by the force of the pool exerting a force on the swimmers foot. Explain this in terms of Newton's 3rd Law.
What is "the action is pushing off of the side of the pool, the reaction is being propelled forward"?
a change in a moving object's speed or direction
What is "acceleration"?
Another name for Newton's First Law.
What is "law of inertia"?
Which would have a greater acceleration, a small car or a large car, if the same force is applied?
What is "a small car"?
Explain the action and reaction forces acting on a book resting on a table.
What is "action force is the weight of book on table - reaction force is a force equal to the books weight pushing up from the table onto the book."
define inertia
What is "an object's tendency to resist any change in its motion"?
Which of the following has the greatest inertia? Person or Train?
What is "train"?
What does the "m" stand for in F x ma
Mass
While repairing the Hubble Telescope, which is in space, an astronaut turns a screwdriver clockwise. What direction will the astronaut turn?
What is "counter-clockwise"?