Newton's 1st Law
Newton's 1st Law of Motion defininition
Objects will stay in motion or at rest until an unbalanced force acts upon them
Newton's 2nd Law Definition
The more mass an object has the more force required to move it.
Newton's 3rd Law Definition
For every action, there is an equal and opposite reaction.
If the forces are _______ the object will change acceleration
Unbalanced
If an object is in motion, friction causes an object to ______
Slow Down
List the objects in order from least to most inertia.
a. puppy 10 kg
b. a cup 2 kg
c. a horse 25 kg
cup, puppy, horse
Jerry threw three baseballs (the same size and recorded the time) Which ball was thrown with the greatest force?
Ball A 3.4 seconds
Ball B 2.5 seconds
Ball c 3.6 seconds
Ball B
If I push a box with a force of 10N, what is the force the box exerts?
10N
If Forces moving in the same direction. How do we find net force?
ADD
A fireman uses the hose and it knocks him backwards.
An example of which law?
3rd
The tendancy for an object to resist a change in motion
Inertia
A car is moving 150m/s with a force of 5000N. What is the car's mass?
33.33kg
Normal force and gravity are always equal
true or false?
Which direction does each point?
True
Gravity:Down
Normal force: Up
If forces are moving in opposite directions, how do we calculate net force?
subtract
It takes more force to move a car than it does a bike.
Which law is this?
2nd Law
An object traveling at a constant velocity with no friction will continue forever.
True or False
True
What is the acceleration of an object with a mass of 15kg and a force of 150N?
10m/s
When two objects collide they exert an equal force in the opposite direction.
True or False
True
Objects will not move in the direction of the net force.
True or False
False
What three ways can acceleration be changed?
Speed Up, Slow Down, or Change Direction
You are driving in the car and all of a sudden your mom slams on the brakes. Explain why you fly forward if you are not wearing a seatbelt. (USE A VOCAB WORD)
inertia
If you are given the mass and the force of an object what can you calculate?
The acceleration of the object
A 20 kg ball hits the wall with a force of 20N what force does the wall exert on the ball?
20N
A car slowing down is an unbalanced force
True or False
True
Two items are playing tug of war. There are 3 people on Team A and 4 people on Team B.
What must team A do to win?
Apply more force