Vocabulary
The rate at which velocity changes
acceleration
The attractive force between objects; the force that moves objects downhill.
gravity
This law describes motion produced by unbalanced forces (Force= mass X acceleration)
Newton's 2nd Law
If Haidyn is pushing Sarah to the right with a force of 10N and Brelyn is also pushing Sarah to the right with a force of 6N, what is the net force on Sarah, and in what direction will she accelerate?
16N to the right
A ball whose mass is 25 kilograms is rolling at a rate of 4.3 meters per second. What is the momentum of the ball?
107.5 kg.m/s
A push or pull exerted on an object
force
A measure of the amount of matter in an object
mass
This law states that an object at rest stays at rest and an object in motion stays in motion unless acted on by an unbalanced force
Newton's 1st Law
If the girls in the class are pulling on a tug-of-war rope with a force of 365N and the boys are pulling in the opposite direction with a force of 278N, what is the net force on the rope? Who will win the game?
87N
Girls will win
A marble is rolling at a velocity of 3 m/s with a momentum of 7 kg.m/s. What is the mass of the marble rounded to the nearest hundredth?
2.33 kg
The overall force on an object when all the individual forces acting on it are added together
net force
A measure of the force of gravity on an object
weight
For every action there is an equal and opposite reaction
Newton's 3rd Law
If Logan is pushing a desk to the right with a force of 15N and Nico is also pushing the desk to the right with a force of 11N, what is the net force on the desk, and in what direction will it accelerate?
26N to the right
A 5 kg baseball is traveling at a velocity of 19 m/s. What is the momentum of the baseball?
95 kg.m/s
A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second
Newton
the tendency of an object to resist a change in motion
inertia
Newton's 1st law is also known as the law of __________________.
inertia
If Maybin and Hiter are pulling on a tug-of-war rope with a force of 295N and Montogomery and Singleton are pulling in the opposite direction with a force of 137N, what is the net force on the rope? Who will win the game?
158N
Maybin and Hiter of course!
A 9 kg soccer ball is traveling at a velocity of 14 m/s. What is the momentum of the baseball?
126 kg.m/s
The force that two surfaces exert on each other when they rub against each other
friction
The product of an object's mass and velocity
momentum
Describe an example of how the 1st law of motion applies to sports that use balls
The ball will remain at rest until an external force acts upon it and it will remain in motion until an external force acts upon it
If Anna is pushing a chair to the right with a force of 10N and Julia Kate is pushing the same chair in the opposite direction with a force of 14N, what is the net force on the chair, and in what direction will it accelerate?
4N to the left
A soccer ball is traveling toward the goal with a momentum of 5.2 kg.m/s. The soccer ball has a mass of 4.9kg. At what velocity is the soccer ball traveling? Round answer to the nearest hundredth.
1.06m/s