Exam Prep 2

When a roller coaster is at the top of a hill it has

• high potential energy

• high kinetic energy

• low potential energy

• equal amounts of kinetic and potential energy

When a roller coaster is at the bottom of a hill it has

• high potential energy

• high kinetic energy

• low kinetic energy

• equal amounts of kinetic and potential energy

What kind of energy is in a moving skateboard?

• Potential
• Kinetic
• Both potential and kinetic energy
• none of the above

A man is driving a truck of with a velocity 10 m/s and possesses Kinetic energy of 10,000 J. Find out the mass of a truck?

• 200 kg

• 2000 kg

• 2000 kg

• 20000 kg

An iron ball of mass 5 kg is dragged in the upward direction on an inclined plane. Calculate the total potential energy gained by this ball, given that the height of the wedge is 20 meter.( g =10 N/kg)

• 100 J

• 1600 J

• 1000 J

What two factors determine how much kinetic energy an object has?

• position and mass
• speed and position
• speed and mass
• speed and surface area

Lance is a 60-kg runner who, on a good day, runs at a speed of 5 m/s. What is his kinetic energy when he runs at this speed?

• 150 Joules

• 1500 Joules

• 750 Joules

• 2940 Joules

George rolled four different types of paper into four different cylinders. Identical 10-cm rubber bands were placed around the cylinders to hold the paper in place. Each number in the answer choices is the diameter of one of the cylinders. Which cylinder has the rubber band with the greatest elastic potential energy?

• 5 cm

• 10 cm

• 20 cm

• 25 cm

If the deer is running at a speed of 8 m/s, and has 32,000 Joules of Kinetic energy, what is its mass?

• 1000 kg

• 4000 kg

• 1500 kg

• 1200 kg

What is the mass of a ball that has a kinetic energy of 115 J and is traveling at 9 m/s?

• 1035 kg

• 23.5 kg

• 12.8 kg

• 2.84 kg