Kinetic Energy Test

Find the speed of a model rocket that has a mass of 15 kg and Has 80,000 J of kinetic energy.

• 10666.7 m/s

• 103.9 m/s

• 5333.3 m/s

• 73.03 m/s

What is the mass of an object that creates 33,750 joules of energy by traveling at 30 m/s?

• 75 kg

• 15 kg

• 1125 kg

• 37.5 kg

My bowling ball, when dropped from a roof, has 78,750 J of kinetic energy. If the ball has a mass of 7 kg, at what speed does it hit the ground?

• 22,500 m/s

• 150 m/s

• 33.9 m/s

• 1148 m/s

An airplane designed to carry a space shuttle has a top speed of 236 m/s, at which its kinetic energy is 9,760,000,000 J. What is its mass?

• 175,237 kg

• 41,355,932 kg

• 87618.5 kg

• 350,474 kg

A 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?

• 3.2 J
• 4.2 J
• 2.0 J
• 12.8 J

A 2600 kilogram car is moving at a speed of 25 m/s. How much kinetic energy does the car have?

• 427,500 J
• 237,500 J
• 437,500 J
• 537,500 J

What is kinetic energy?

• The energy an object has due to its motion.

• The energy an object has due its chemical composition.

• The energy an object has due to its atomic structure.

Calculate the kinetic energy of a moving 4 kg object travelling at a velocity of 3 m/s.

• 18 J
• 36 J
• 12 J
• 6 J

Where would this tossed baseball have the least amount of kinetic energy?

• point W

• point X

• point y

• point z

What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.

• 80 J
• 3.2 J
• 160 J
• 40 J