1. Period 2 Question 1

2. The kinetic energy of an object is increased 8 times as a result of:
Increasing the mass 4 times
Increasing the speed 4 times
Increasing both the mass and the speed 2 times
Increasing the speed 8 times
Applying a force which is 8 times greater

3. Period 2 Question 2

4. When an object is dropped from a tower, what is the effect of the air resistance?
Increases the objects kinetic energy
Increases the objects potential energy
Does positive work on the object
Decreases the objects mechanical energy
None of the above is correct

5. Period 3 Question

6. The kinetic energy of an object is increased by a factor of 27 by:
Decreasing the mass 3 times and increasing the speed 3 times
Increasing the mass 3 times and increasing the speed 3 times
Increasing the speed 27 times and keeping the mass constant
Decreasing the mass 27 times and increasing the speed 9 times
None of the above is correct

7. Period 3 Question 2

8. both move with the same speed at the bottom depends on the slide shape
Two blocks (heavy and light) are released from the top of a building. The light falls straight down and the heavy slides down a ramp. If all friction is ignored, which one is moving faster when they reach the bottom?
heavy
light
both move with the same speed at the bottom
depends on the slide shape
insufficient information given