Force Basics
Newton 1,2,3
Vocabulary
Calculate
The Universe
100
A balance of all forces acting on an object
What is net force?
100
Which Law? (Just put the numbers)
Law of Inertia
Law of Acceleration
Law of Momentum
What is 1,2,3?
100
The resistance to a change in movement.
What is inertia?
100
A 7000 kg rocket is accelerating at 30 m/s2. What is the force of the thrust?
What is 210,000 Newtons?
100
The 2 factors in the universal law of gravitation are most important in determining the force between 2 objects.
What are mass and distance?
200
The net force acting on the objects? (3 answers)
What is
A. 6N right
B. 12N right
C. 0N; does not move
200
Which Law?
F = m x a
Inertia
a = F/m
What is 2, 1, 3?
200
decreasing acceleration
What is deceleration?
200
A 1.5-kg ball is thrown at 10 m/s. What is the ball's momentum?
What is 15 kg m/s?
200
A ________ object will have more gravitational force
What is a large object with a lot of mass?
300
The 2 universal forces?
What are gravity and friction?
300
Which Law?
For every action there is equal and opposite reaction.
an object in motion wants to stay in motion; and object at rest wants to stay at rest
If you increase the force of an object the acceleration will increase; if you increase the mass, the force will need to be greater to accelerate the object
What is 3, 1, 2?
300
The measure of the gravitational force on an object
What is weight?
300
Dan pushes a 9 kg pumpkin across a balcony with a force of 10 N. The force of friction is 1 N. What is the acceleration of the pumpkin?
What is 1 m/s2?
300
The ____________ the distance between objects the less gravitational force.
What is greater?
400
What happens to the force if the mass increases?
What is the force needs to increase?
400
Explain what will happen based on the formulas:
F = m x a If the mass decreases, the force will need to _________
m = F/a If the mass decrease, the acceleration will __________
a = F/m If the mass decreases, the acceleration will _________
What is
decrease
increase
increase
400
The amount of matter in an object
What is mass?
400
A steel ball whose mass is 2.0 kg is rolling at a rate of 2.8 m/s. What is its momentum?
What is 5.6 kg m/s?
400
This universal force pulls an object towards the center
What is centripetal force?
500
If I pull a rope to the left with 5 Newtons of force, my friend help pull with 5 Newtons of force, but my dad pull in the opposite direction with 8 Newtons of force, What is the net force?
What is 2 Newtons left
500
Which Law?
A rocket ship blasts off
A bug splattered by a bus
The revolution of the planets
What is 3, 2, 1?
500
A force that acts on an object moving in a circular path and it is directed towards the center
What is centripetal force?
500
What is the approximate weight in newtons of a 7.0-kilogram bowling ball?
What is 686 N?
500
The difference between rotation and revolution?
What is
rotation-spin around an axis
revolution-to circle an object