PE and KE
Forces
Speed
Graphing Motion
Inclined Planes
100
Potential energy is 62.75 J and Total energy is 150 J, how much kinetic energy is there?
87.25 J
100
If a box is being pushed to the right at 50 N and the opposing force is 25 N, what is the net force and direction of movement?
25 N right
100
If I know the distance an object travels and the time it took to travel the distance, what can I calculate?
Speed
100
How would you describe the motion of the graph the first 20 minutes?
Constant speed
100
How can I decrease the force needed to move an object up an inclined plane?
Make the inclined plane longer.
200
How can you change the amount of potential energy an object starts with?
Add height
200
A satellite is being launched into space. If gravity is pulling at 3000 N, what is the least amount of thrust the rocket launching the satellite must have to be successful to take off?
3001N
200
If a car travels 700 miles in 14 hours, what was the car's average speed?
50 mph
200
Which graph shows the slowest speed?
A
200
What is the disadvantage of using an inclined plane to move a load?
longer distance
300
On a roller coaster, where does the car have the greatest potential energy?
top of the largest hill
300
A game of tug-of-war is being played. Team 1 is pulling at 300 N and Team 2 is pulling at 315 N. Calculate the net force and tell me who wins.
Team 2 15 N
300
What is the difference is speed between two cars, one that traveled 500 miles in 5 hours and the other 525 miles in the same time?
5 mph
300
What type of line demonstrates acceleration at a constant rate on a speed graph?
Diagonal
300
To use the least force to move a load, which inclined plane would I use?
A
B 
A
400
If kinetic energy is 92.67 J and total energy is 200 J, what is the potential energy?
107.33 J
400
Porky the Pig is running from Farmer Joe. Porky is running East at 75 N and Farmer Joe is trying to drag Porky back with 80 N. What is the net force and who wins?
Farmer Joe 5 N
400
A plane flies 12,500 km in 10 hours. What was its speed?
1250 km/hr
400
A horizontal line on a distance graph means
at rest
400
Would a longer ramp or a shorter ramp increase the amount of force needed to move an object?
shorter
500
At which position does the pendulum have the greatest kinetic energy?
3
500
Jerry and Bob are moving a couch into the living room. Jerry is pushing with 50 N and Bob is pulling with 60 N. What is the net force?
110 N
500
What is the difference in speed between 2 race cars, one that took 75 minutes to travel 300 miles and the other that took 60 minutes to travel the same distance?
1 m/min
500
A diagonal line on a distance graph means
constant rate
500
The amount of work is decreased when using an inclined plane.
False