Gravity and Friction
Force
Balanced or Unbalanced: a book at rest on a desk
Balanced
Force = mass x ___________
Acceleration
Momentum = mass x _________
Velocity
An object with a mass of 2kg accelerates at 2m/s2, what is the amount of force on the object?
4 N
When an object hits another object with force this is considered a what?
Contact Force
The amount of matter in an object
Mass
The force that two object exert on each other.
Force Pair
Calculate the momentum of a 0.145 kg baseball being thrown at a speed of 40.0 m/s.
5.8 kg x m/s
Gravity, Magnetism, and Static Electricity are all examples of what?
Non-contact Force
Newton's 1st Law of Motion is also considered the Law of what?
Inertia
The unit kg x m/s2 is better known as a what?
Newton
The unit for momentum
kg x m/s
What is the net force of 150 N → and ← 275 N?
← 125 N
The tendency for an object to resistance a change in motion
Inertia
Balanced or Unbalanced: A train rounding a curve at a constant speed
Unbalanced
What is the centripetal force that acts on satellites by continuously changing their direction of motion?
Gravity
Which is the action force?
You push on a box and the box pushes back on you.
You push on a box
What is the velocity of a 0.5 kg ball that has a momentum of 3.00 kg·m/s?
6 m/s
Why do you weigh less on the Moon than you do on Earth?
The distance from Earth lessens your gravitational pull on the Earth
An object at rest will stay at rest will stay at rest, and an object in motion will stay in motion in the same ______ and at the same ______, unless acted on by an unbalanced force.
direction, speed
A force that acts perpendicular to the direction of motion toward the center of the curve is called a what?
Centripetal Force
For every action there is an _____ and _______ reaction.
Equal, Opposite
An object with a mass of 6.3 kg has a force of 7.1 newtons applied to it. What is the resulting acceleration of the object?
1.1 m/s2