Force
Newton's Laws- 1
Newton's Laws - 2
Newton's Laws - 3
Calculations
100
Which term best describes the forces on an object with a net force of zero?
balanced forces
100
Which of Newton's Laws relates the net force exerted on an object to its mass and acceleration?
Newton's second law of motion
100
________ is the tendency of an object to resist any change in its motion.
Inertia
100
_________relates the net force exerted on an object to its mass and acceleration.
Newton's second law of motion
100
Sophia pushed a shopping cart with a mass of 10 Kg with a force of 4.0N. What is the shopping cart's acceleration?
A= F/M
A= 4.0N/10Kg
A= 0.4m/s2
200
The _____ is the combination of all the forces acting on an object.
net force
200
How does the gravitational force change as two objects move farther apart?
it decreases
200
Which Newton's Law best explains INERTIA?
Newton's first law
200
If you apply a force of 2 N to a toy car and to a real car. Which car has the greater acceleration?
Toy car because it has a smaller mass.
200
What is the unit used for FORCE, for MASS, and for ACCELERATION when calculating Newton's Second Law of Motion?
Force= Newton (N)
Mass= Kilograms (Kg)
Acceleration= m/s2
300
A(n) _____ is a push or a pull that one body exerts on another.
force
300
Why do astronauts seem weightless in orbit?
The spacecraft is in freefall
300
An object in motion will stay in motion unless a __________ acts
force
300
What is the equation for acceleration according to Newton's Second Law of motion?
a=Fnet/Mass
300
What is the SI unit for Force?
Newtons
400
In which direction is centripetal force?
Toward the center of the circle
400
True or False
Friction is a force
True
400
A marble will continue to roll across the floor until another force acts on it is an example of which law of motion?
Newton's 1st law of motion
400
What is the equation for Net Force according to Newton's Second Law of Motion?
Fnet=ma
400
A helicopter with a mass of 500 kg flies with an acceleration of 13.88 m/s2 What is the force applied by the engine to carry the helicopter as it flies?
F= m/a
F= 500 kg /13.88 m/s2
F= 36.02 N
500
What is the gravitational force exerted on an object called?
weight
500
_____________ states that when one object exerts a force on a second object, the second object exerts a force on the first that is equal in strength and opposite in direction.
Newton's Third Law of Motion
500
A person's body is thrown outward around a curve on a rollercoaster is an example of which law of motion?
Newton's 1st law of motion
500
What is the formula for mass according to Newton's Second Law of Motion?
m=Fnet/a
500
A pitcher throws a baseball that has a mass of 0.145Kg with a force of 35N. What is the baseball's acceleration?
A=F/m
A= 35N/0.145Kg
A= 241.38 m/s2