Forces
Net Forces
Newton's First Law
Newton's Second Law
Newton's Third Law
100
A force that opposes motion
Friction
100
What is the Net Force on the object below?
0N
100
This describes laziness or resistance to change in motion
What is inertia
100
What is Newton's Second Law
The relationship between an objects force, mass, and acceleration or F=ma
100
What is Newtons third law?
For every action there is an equal and opposite reaction
200
What force keeps the Earth in orbit?
Gravity
200
What is the net force on the object below?
0N
200
Complete the sentence. An object in motion, remains in
What is motion?
200
What two factors affect force according to Newton's Second Law?
mass and acceleration
200
What happens when a 50kg person and a 90kg person are on scooters and push off of eachother?
They will move in opposite directions and the 50kg person will move farther
300
Why does earth orbit the sun instead of the sun orbiting earth?
because the sun has a larger mass
300
Which way will the box move? The length of the arrow shows magnitude (amount) of force.
To the right
300
Complete the sentence. An object at rest, remains at
Rest
300
Which would have more force, a 5,000 kg truck or a 2,500 car travelling at the same speed?
The 5,000 kg truck.
300
Explain how Newtons Third Law relates to rockets launching
The exhaust and explosion pushes downward while the rocket moves upwards
400
What is a change of speed or direction called? It's measured in m/s/s
Acceleration
400
Which way will the box move? The length of the arrow shows magnitude (amount) of force.
To the left
400
Name one force that would resists motion
What is friction, air resistance, drag?
400
What would be the force of a 100 kg person accelerating at 10 m/s/s
1,000 N
400
When I throw a ball at the table why does it bounce?
Because the table exerts and equal but opposite force on the ball making it bounce
500
What is the unit for Force?
Newtons (N)
500
What is the net force on this object?
25N Right
500
Explain in terms of Newton's First Law what will happen to the microwave on top of the car when the car stops.
It will slide forwards because it has inertia and wants to keep moving.
500
What would the acceleration be of a airplane with a force of 500,000 N and a mass of of 1,000 kg
500 m/s/s
500
While driving down the road, a firefly strikes the windshield of a bus and makes a big mess right in front of the driver! the firefly hit the bus and the bus hit the firefly. Which of the two forces are greater: the force on the firefly or the force on the bus?
Neither! The forces are equal and opposite.