Situations
Why aren’t we pulled toward each other if all objects that have mass experience a gravitational pull?
The Earths mass is greater than any object on Earth and will cancle out the mass of the smaller object
What do we call the maximum speed reached when free falling due to the Earth’s gravitational pull being canceled out due to air resistance?
Terminal Velocity
What Foce acts between the masses of two objects
Gravity
friction of ice cube being pushed across a countertop
Sliding Friction
The Measurment in which is used to measure force. (SI Unit also)
Newton (N)
Which will hit the ground first when dropped from a height of 10m, a marble, a leaf, or a can of soda
he marble and can of soda will hit at the same time while the leaf will fall the slowest
How fast are you accelerating when you have reached terminal velocity in free fall?
o m/s
What type of force opposes the movement of an object
Friction
friction between your hand and the wind when going down the road
Fluid Friction
Who credited with discovering the principle of Force
Sir Issac Newton
Why does a golf ball stop rolling after being hit down a fairway in a round of golf?
friction between the ball and the grass
How does deceleration occur?
it occurs when force moves in the opposite direction of travel
What do we call it when all forces acting on an object equal zero?
Ballanced Force
friction of the wheel bearings in a tire
Rolling
Newtons First Law
An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.
What is the reaction force when I push on the floor?
The floor pushes back on me
What is the product of an objects mass and its velocity?
Momentum
How do we combine forces that are acting in the same direction?
Add the two forces together
friction between a car in park and the road
Static Friction
Newtons third Law
For Every action there is an Equal an opposite reaction.
How is the force that the Earth exerts on a leaf the same as the force that the Earth exerts on the moon
the Earth pulls both toward its center
What is the difference between mass and weight? Be sure to define each of these before describing how they are different
Mass is a measure of how much matter an object contains, while weight is a measure of the force of gravity on an object.
They are dierent because mass measures volum while weight measures a force. They are similare in that on Earth they are effected equally by gravity.
What do we call the tendency of an object to stay in one place?
Inertia
friction that occurs when rubbing your hands together
Sliding Friction
Newtons second Law
the time rate of change of the momentum of a body is equal in both magnitude and direction to the force imposed on it. F=MA