Physics Quiz

What type of energy transformation occurs when a student throws a ball in the air?

• Kinetic to potential

• Potential to thermal

• Thermal to kinetic

• Mechanical to chemical

At which two points is the kinetic energy of the ball at its maximum?

• Point 1 and Point 5

• Point 2 and Point 4

• Point 3 and Point 4

• Point 1 and Point 3

Neglecting friction, what happens to the total mechanical energy as the pendulum swings from position A to position B?

• It decreases.

• It increases.

• It remains the same.

• It is not conserved.

The picture shows a wheelbarrow that uses a wheel and axle. The wheel and axle are used to help move heavy objects. Which of the following questions do the wheel and axle help provide a solution to?

• How can heavy objects be moved without any force?

• How can heavy objects be moved straight up and down?

• How can gravity be decreased when moving heavy objects?

• How can friction be decreased when moving heavy objects?

Pick two simple machines that change the direction of force.

• inclined plane

• wedge

• pulley

• lever

• screw

Select three of the following that are examples of wedges.

• chisel

• door stop

• carving knife

• wheelbarrow

• ramp

Select four that are considered a wheel and axle.

• roller blades

• ferris wheel

• door knob

• pulley system

• winch

You want to move a large rock from his yard. Which simple machine should he use?

• a wedge because it will change the direction of force of the rock

• a wheel and axle because it will transfer all of his force to the rock

• a lever because it will change the amount of force that is needed to move the rock

• an inclined plane because it will make the force of the rock go a long distance

• A

• B

• C

• D

• A

• B

• C

• D