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Chapter 3 Vocab

QuestionAnswer
The force that attracts a body toward the center of the earth, or toward any other physical body having mass gravity
The resistance that one surface or object encounters when moving over another. friction or sliding friction
Mass times velocity Momentum
The force between two bodies in contact that RESISTS the initial motion of one running over the other. static friction
F=ma Newton's 2nd law of motion
Which law explains inertia? Newton's 1st law of motion
Opposes the motion of objects that move through the air air resistance
To every action force there is an equal and opposite reaction force. Newton's third law of motion
The gravitational pull on an object weight
How much matter is in an object. mass
When gravity and air resistance equal out and the falling object reaches a top speed. terminal velocity
A snowball going down a hill is an example of which type of friction? Rolling
Which law explains why a baseball accelerates faster than a volleyball if both thrown with the same force? Newton's 2nd Law of motion
When you lean against the wall, the wall pushes back on you. What law explains this? Newton's 3rd law of motion
The ___________________ of an object is different on other planets in the solar system. gravity
_____________________ relates the net force exerted on an object to its mass and acceleration. Newton's 2nd law of motion
The type of friction where a force is being applied but the object is not moving. Static friction
The type of friction where a force is being applied and the object is moving along the surface of another Sliding friction
mass x gravity Weight
Which law states that forces come in pairs? Newton's 3rd law of motion
An object in motion stays in motion and an object at rest stays at rest, unless acted upon by an outside force. Newton's 1st law of motion
Momentum cannot be created nor destroyed, but can be transferred from one object to another. Law of conservation of momentum
SI unit of Force Newtons
SI unit of mass kilograms
SI unit of time seconds
SI unit of acceleration m/s/s
SI unit of weight Newtons
SI unit of speed m/s
SI unit of distance meters
SI unit of momentum kg x m/s
Created by: Ms. Lincoln