What is a PUSH or PULL on an object?
Force
The force that acts directly against the direction of motion, usually when two surfaces come in contact and rub against each other.
What is friction?
The pull of gravity affects the objects what?
What is weight?
If these boys are each pulling with the force of 10 newtons. What will happen?
The boy in blue will win.
They will not move at all.
The boy in red will win.
They will not move at all. Balanced force is being applied.
What is a change in the velocity of an object considered?
ACCELERATION
An objects location is its ________.
What is position?
Which of the following statements is true?
Balanced forces cause a change in position.
Unbalanced forces cause a change in position.
Forces do not affect position.
Unbalanced forces cause a change in position.
What is the distance traveled per unit of time?
What is SPEED?
What do you call the speed AND direction of a moving object?
It's VELOCITY
What is the formula for Newton's second law of motion?
F=M*A
What is more reliable in physics: weight or mass?
Mass
In outer space, an object's ______ changes, but its _______ stays the same.
What is weight and mass?
What does Newton's law of Inertia state?
An object at rest (in motion) will stay at rest (in motion) unless acted on by another force.
True/False:
Action and reaction forces DO NOT cancel out because they act on different objects
True
What is the average speed of a train that covers 80km in 1 hr, 200 km in 2 hrs, and 420 km in 4 hrs?
80 + 200 + 420 = 700
1 + 2 + 4 = 7
700/7 =
100 km/hr
What was the main objective of the lab we did; "Stopping on a Dime" and what 2 data points did we need to gather to find out the answer?
We had to find out where it was safe for the band to set up past the out of bounds line on a basketball court. To do that we needed to find the average speed and stopping distance of the "players"
What is the basic understanding of Newton's 3rd law of motion?
For every action there is an equal and opposite reaction.
What always changes when an object is in motion?
a. its direction
b. its speed
c. its mass
d. its position
D. Its position