First Law of Motion
Also known as the Law of ___________
Inertia
The unit for force
Newtons (N)
Forces have to occur in _________.
pairs
A dog lying on the floor
gravity and normal
A 10 kg bowling ball is rolled down the lane at 2.3m/s2, at what force will the bowling ball hit the pins?
23N
_________ mass equals greater inertia
greater/bigger
________ forces means the object is at rest
Balanced
The acceleration of gravity on earth
9.8m/s2
A paper falling to the ground
gravity and friction (air resistance)
A 1.2 kg baseball is thrown at a catcher with an acceleration of 33 m/s2. What will be the force of the baseball when it hits the catchers' mit?
39.6N
Inertia is the tendency of an object to ________.
keep doing what it is already doing.
_________ forces means that the object is moving
Unbalanced
The total of all forces acting on an object
Net force
A beach ball floating in a pool
gravity and buoyant
A 76.4 kg person is standing on the moon, which has a gravitational acceleration of 1.62 m/s2. What is the force of the person on the moon?
123.77N
What are two vehicle safety features that we now have because of our understanding of intertia?
seat belts and air bags
What is the force equation? (what does each variable stand for?)
Force= mass · acceleration
Give an example of Newton's 3rd Law
Any scenario where there is a equal and opposite reaction occuring.
A car driving down the highway
gravity, normal, friction (air resistance/ tires), thrust/applied
A 82.7 kg person is standing on earth. What is the force of the person?
810.46N
States that:
An object at rest will stay at rest, and an object in motion will stay in motion unless an outside force acts on it.
States that:
The force on an object and its' mass affect the objects' motion
States that:
For every action there is an equal and opposite reaction
A canoe being paddled up river
gravity, bouyant, friction, applied
A 25 kg rock is lifted by a person with a force of 10 N. What is the acceleration of the rock?
0.4 m/s2