Misc.
When the speed of an object is halved, its momentum
it is halved
This is the variable in an experiment that we measure after the experiment.
Dependent Variable
What is NOT a form of acceleration?
maintaining a constant speed
Forces always come in
Pairs
Which of the laws is a formula? What is the formula?
2nd
F = ma
What is the value of gravity?
9.8 m/s/s
If I say there are 45 chairs, this is an example of what kind of data?
Quantitative
If a car is moving on a straight road, what two things determine the car's velocity?
Speed & Direction
The total momentum before a collision is the same as the total momentum after a collision is
The Law of Conservation of Momentum
A rocket launch
Newton's 3rd Law
This is the vertical axis on a graph
Y
The leaves outside are brown and falling to the ground, therefore it is fall would be an example of :
An inference
A negative acceleration is
slowing down
Two students push a stalled car. Student A pushes with 300 N to the right, and Student B pushes with 200 N to the right. What is the net force on the car, and in which direction will it accelerate?
500 N to the right
After you turn off a fan, the blades continue to spin for a while because there is no force to stop them.
Newton's 1st Law
An explanation of why something happens, with supporting evidence, is a
theory
This explains why or how something happens
theory
The momentum of an object is the combination of its
mass & velocity
If force remains the same, an increased mass will result in a decreased acceleration
Newton's 2nd Law
Hitting a baseball with a baseball bat
Newton's 2nd Law
In science, what is the unit used for measuring volume?
liters
If I skip school, then I will get a detention, is a
hypothesis
Which has the least momentum, a 10,000 kg train at 2 m/s, a 10 g bullet at 400 m/s, or a rocket at rest?
Rocket
The Earth continues to orbit the sun with a constant velocity
Newton's 1st Law
You are sitting in that chair right now.
Newton's 3rd Law