Energy
What is potential energy?
Stored Energy.
1. A car runs out of gas at a red light and someone begins to push the car forward with 10N of force. The force of friction, opposing the forward motion, is 3N. What happens to the speed and direction of the car?
B. The car will move forward with a force of 7N with an increasing speed
What is Newtons 1st Law of Motion?
An object in motion will stay in motion an object at rest will stay at rest unless acted by an unbalanced force.
What is the Speed Equation?
Speed = distance / time
2. Which example does NOT have potential or kinetic energy?
D. Windmill turning
2. Which example does NOT exhibit unbalanced forces?
C. ---> 10N and 10N <---
What is Newtons 3rd Law?
For every action there is an equal and opposite reaction.
What are the units for distance?
Miles, Kilometers, Meters
4. What type of energy is best represented at location X?
C. Potential Energy
A Balance Force is going to be moving at what type of speed?
CONSTANT SPEED
What is Newtons 2nd Law?
6. A train travels 800 km in 6hrs. What is the average speed of the rain?
B. 133 km/hr
9. Hospitals use gasoline-powered generators during power outages to keep lifesaving equipment working. What energy transformations take place within a generator?
B. Chemical energy, to mechanical energy to electrical energy
10. Which scenario describes the motion of the object?
D. The object is traveling at a Constant Speed
8. A car driving down the road runs out of gasoline. Which Newtons Laws explains why the car continues to move without gasoline?
A. An object in motion stays in motion unless acted by an unbalanced force
5. Using the data which section of the table represents the highest average speed?
C. Section C
Potential Energy is always the highest at the top or bottom?
Kinetic energy is always the highest at the top or bottom?
PE= top
KE= bottom
An Unbalanced Force is known for ...
Change in direction , accelerating
7. Which of Newtons Laws best represented by the data in the table?
B. Newtons 2nd Law of Motion
Calculate the average speed if a golf cart runs 140 meters in 10 seconds.
14 meters/second