Motion
Motion with Math
YAY!!!!
YAY!!!!
Newton's Laws and Force
Force Calculations
More Math WOOOHOOOO
More Math WOOOHOOOO
Work and
Conservation of Energy
Conservation of Energy
Conservation of Energy Math :O :D
100
Describe the motion of the object between seconds 8 and 12
the object is staying still.
100
An runner starts at the starting line and runs 100m in 12 seconds. What was his velocity?
8.3 m/s
100
A ball is sitting on the ground not moving, and minding its own business. Which of Newton's Laws explain why it doesn't start rolling?
Newton's First Law
Explain for bonus points.
100
What is the equation for Force?
Bonus: which of Newton's Laws gives us this equation?
F=m x a
Newton's Second Law
100
A box is falling off a shelf. What is happening to the Energy as the box falls?
The GPE is being converted to KE
100
A 12kg dog jumps off the ground with a speed of 7 m/s. How much Kinetic Energy does the dog have at the start?
294J
200
In the graph what does it tell you about the velocity when the graph is going up?
Positive going up
200
A person goes 10m right, then 6 meters left, then 2 meters north, then 2 meters south.
What was the person's displacement?
Why would someone walk like this?!
4 meters to the right
200
When you jump you are applying a force to earth and the Earth applies a force back on you. Which of Newton's Laws explains why we are able to jump?
Newton's 3rd Law
For every action there is an equal and opposite reaction.
200
What is a 70kg persons weight?
700N
200
If the Total Energy on top of a roller coasters hill is 420,000J and it is 30 meters off the ground and traveling at 10 m/s....how much Work is done on the coaster to get it up there?
420,000J of Work.
200
At a height of 30m and 10kg ball is falling through the sky at 5 m/s. What is the Total Energy the ball has?
TE = PE + KE
3125J = TE
300
What can you determine from the slope of a position vs time graph.
The speed of an object.
300
What is the displacement between seconds 0 and 2.
8 meters
300
On your boards draw a free body diagram for the situation below.
A ball that was punted is flying through the air.
300
What is the net force acting on the object below?
11N to the right.
What is normal force?
300
What is the law of conservation of energy
Energy is not created or destroyed it simply transfers from one form to another.
300
A roller coaster is moving with 250 J of Kinetic Energy and the system has 780J of total energy. How much GPE does the roller coaster have?
530J
400
Give an example of a time that someone or something else would not be considered moving relative to you.
400
What is the velocity of the object between time 4 and 8? Must include direction?
-2 m/s or 2m/s downward.
The slope is a straight line what does that tell you about the objects speed?
400
When will object be able to move? What does this mean for the net force?
When the forces are unbalanced. The net force is not equal to zero.
400
What is acceleration of the object below if it has a mass of 5kg?
8 m/s^2
400
What is Kinetic Energy?
Energy of an object due to its motion.
400
A tracker pulls a cart with a force of 10,000N over a displacement of 30m. What was the work done by the tracker?
300,000J
500
What is velocity a measure of
how much distance a object travels in a certain amount of time.
AND
Direction. VECTORS!!!!
500
A jogger is running at 3 m/s before speeding up to 8 m/s over 5 seconds.
What is the acceleration of the jogger? units matter
1 m/s^2
What is another way you can accelerate without changing the speed?
500
two students both push on a desk and it doesn't move what can you say about the two forces applied by the students?
They are balanced
What is the net force?
500
Two 100N pushes are applied to a 200kg block to the right while a 250N and 350N force is applied going to the left.
What is the net Force?
400N
What is the acceleration of the object?
500
What is Potential Energy?
Energy that is stored based on its position.
500
A 15kg dog jumps from the ground with KE of 1250J. What GPE will the dog have at its highest point?
1250J
Bonus points: how high did the dog jump?
mgh = GPE
600
What does the line here tell you about the objects motion?
It has a constant acceleration
600
A runner runs the 400m race going one full time around the track in 60 seconds. What was the runners displacement?
0m
What would his velocity be if he just ran straight 400m?
600
What affect will balanced forces have on an object moving a constant velocity of + 300 m/s?
No acceleration
600
600 points if at least 1 of your team mates has their Review Guide up to Energy finished.
double if all of your team mates do