Where is there NO air resistance?
Bonus: Why is there no air resistance?
space, vacuum
Bonus: NO air
100
What is Newton's 1st Law?
An object at rest remains at rest, an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
100
Is it easier to stop a FASTER moving car or a SLOWER moving car?
Bonus: Which has MORE momentum?
slower
Bonus: Faster car
100
How do you stop an object that is in motion?
Apply a force to it.
100
What are the two motions of projectile motion?
Bonus: How does gravity affect projectile motion?
Horizontal and vertical
Bonus: Gravity pulls the object downward (vertical)
200
How does air resistance affect acceleration?
Air resistance slows down acceleration.
200
Complete the sentence: As force INCREASES, acceleration ___________________.
INCREASES
200
Explain how Newton's Cradle works
Momentum is conserved- momentum is transferred through the balls
200
Is it easier to change the motion of an object with a SMALL mass or a LARGE mass?
Small mass
200
IN YOUR OWN WORDS: What is the definition of free fall?
downward movement when only force of gravity is working on an object.
300
What would hit the ground first if dropped from the same height at the same time ON EARTH: an apple or a tennis ball?
They would hit the ground at the same time. Mass does not matter.
300
Complete the question: As mass INCREASES, acceleration _____________.
DECREASES
300
What is the equation to calculate momentum?
p = m x v
300
Why do you move forward in the car when someone slams on the breaks?
Bonus: What Law explains this?
You continue to move forward
1st Law
300
What forces are working on a tire swing hanging from a tree?
Rope pulling the tire upward, gravity pulling the tire downward.
400
What would hit the ground first if dropped at the same height at the same time ON EARTH: leaf or a cotton ball?
Bonus: Why? (What are the 3 S's?)
cotton ball
Air resistance acts on the leaf- size, shape, speed
400
What is Newton's Third Law?
For every action force, there is an equal and opposite reaction force.
400
Fill in the blanks:
When two objects collide, they can either ________________ or _______________________.
Stick together or bounce off one another
400
Calculate the force required to accelerate a mass of 50 kg at a rate of 20 m/s2?
1000kg m/s2= 1000N
400
When momentum is transferred from one object to another, their combined momentum _______________________
a- increases
b- decreases
c- remains the same
remains the same
500
What is the change in velocity of a ball that hits the ground 5s after being dropped.
4.6 m/s
500
What is the equation to calculate Force (using acceleration and mass)?
F= m x a
500
What is the momentum of a car traveling at a velocity of 50 m/s and mass of 1000 kg?
50,000 kg m/s
500
Give an example of an action/reaction pair
Does your pair have motion?