Newton's First Law
What is the definition of inertia?
The property of an object that resists changes to its state of motion
What is the formula for Newton's second law?
F = ma or a = F/m
What is the term used for the two forces that objects exert on each other due to Newton's third law?
Action-reaction pair
What direction does gravity point on Earth?
Towards the ground
When two surfaces are pressed together more, what will happen to the friction between them?
It will increase
What is the quantity used as a measure of how much inertia an object has?
Mass
Fill in the blank: The acceleration of an object is ____ proportional to the force acting on it.
What would the reaction force be to the force that a car tire exerts on the ground?
The force that the ground exerts on the car tire
What is the value of "g" including its unit?
9.8 m/s2
Which is usually greater, static friction or kinetic friction?
Static friction
An object is maintaining its state of motion. Is there a net force acting on the object?
No
Fill in the blank: The acceleration of an object is _____ proportional to the mass of the object.
Inversely
Which experiences more force, a wrecking ball exerting force on a wall, or the wall exerting force on the wrecking ball?
They are the same
What is the difference between weight and mass?
Mass is the amount of matter, weight is the force of gravity
If I apply more force to an object, does the value of kinetic friction increase as well?
No, it is constant
An astronaut throws a baseball out into space. Once the astronaut lets go of the ball, what type of motion will the ball follow?
Straight line
If I triple the force applied to an object, its acceleration will:
Triple
Two ice skaters push each other apart. Ice skater 1 has a mass of 80 kg and ice skater 2 has a mass of 130 kg. Which ice skater will experience the greatest acceleration?
The 80 kg ice skater
What is the equation used to calculate weight?
Fg = mg
The maximum value of static friction on a surface is 20 Newtons. If I apply 10 Newtons, how much force will friction apply?
10 Newtons
Would a baseball pitcher be able to throw a curveball in space? Why or why not?
No, the curve is caused by interaction with the air
Joe and Matt are both pushing a 10 kg block. Joe pushes to the right with 20 Newtons and Matt pushes to the left with 5 Newtons. What is the acceleration of the block? Include direction.
1.5 m/s2 to the right
What type of force is responsible for allowing you to walk forward on the ground?
Friction from the ground on you
Does an object in outer space have weight?
No, but it does have mass
Would writing with a ballpoint pen be possible on a frictionless surface?
No