3/4 Bell Ringer

Which of the following is an example of kinetic energy?

• A stretched rubber band

• A book sitting on a shelf

• A rolling soccer ball

• A compressed spring

A rock on a cliff has potential energy because of:

• Its mass and motion

• Its mass and position

• The amount of force acting on it

• The speed it is falling

When a roller coaster goes down a hill, its potential energy is converted into:

• Electrical energy

• Sound energy

• Thermal energy

• Kinetic energy

A diver stands on a high diving board before jumping. What will happen to the diver’s energy as they step off?

• Kinetic energy will increase while potential energy decreases

• Potential energy will increase while kinetic energy decreases

• Both potential and kinetic energy will increase

• Potential and kinetic energy will stay the same

A skateboarder is rolling up a ramp. At what point does the skateboarder have the greatest potential energy?

• At the bottom of the ramp

• At the top of the ramp

• Halfway up the ramp

• Right after they start moving

What is the correct formula for calculating speed?

• Speed = time ÷ distance

• Speed = distance ÷ time

• Speed = force ÷ mass

• Speed = mass × acceleration

If a car travels 150 kilometers in 3 hours, what is its speed?

• 50 km/h

• 45 km/h

• 30 km/h

• 20 km/h

If an object is not moving, what is its speed?

• 0 m/s

• 1 m/s

• 10 m/s

• It depends on the object's mass

A cyclist is traveling at a speed of 10 m/s for 5 minutes. How can you calculate the total distance traveled?

• Multiply speed by time

• Multiply speed by acceleration

• Divide speed by time

• Divide distance by time

Two students argue about an object's speed. One student measured it in miles per hour (mph) while the other measured it in meters per second (m/s). What is the best way to compare their results?

• Convert both speeds to the same unit

• Find the object’s acceleration instead

• Measure the object’s mass

• Use only miles per hour for speed calculations