Unit 7: Quiz #1 Energy, Work, & Power

A motorcycle with a mass of 400 Kg has Kinetic Energy of 10,000 J. How fast is it moving?

• 70.7 m/s

• 7.07 m/s

• 3.5 m/s

• 30.5 m/s

A drone with a mass of 7 Kg is surveying the land for a new bridge to be built across a trench. The drone is 55 m off of the ground and is traveling with a velocity of 3 m/s. What is the drone's Total Mechanical Energy?

• 3,805 J

• 38.05 J

• 31.5 J

• 3773 J

A Boeing 747 has a mass of 362,870 kg. When it takes off of the ground, it has a velocity of 290. Km/h, or 80.5 m/s. Calculate the Kinetic Energy the Boeing’s Jet Engines must produce in order for it to make a proper takeoff.

• 14.6 Million Joules

• 1.175 Trillion Joules

• 1,175 Joules

• 1.175 Billion Joules

If a woman does 50 Joules of work lifting a dumbbell in 5 seconds. How much power did she generate?

• 10 Watts

• 2.5 Watts

• 100 lbs * sec

• 4 lbs/ sec

A force of 500 N was used to pull a crate 10 meters along the ground. What is the amount of work that was done?

• 5,000 J

• 500 J

• 5,000 W

• 500 W

If it took 17 seconds to move the crate with a force of 500 N for a distance of 10 meters, how much Power was performed?

• 85,000 W

• 2.941 W

• 294.1 W

• 850 W

A cyclist with a mass of 80 kg is on a bike with a mass of 7 Kg. The cyclist is at the top of a hill. The hill is 30 m above sea level. If the cyclist is at rest and then lets his bicycle gain speed as it rolls down the hill, what will their velocity be at sea level?

• 2.42 m/s

• 147 m/s

• 24.2 m/s

• 14.7 m/s

A waiter holds a tray in place. Did they do any work?

• Ya

• Nah

The faster an object moves, the ________ kinetic energy it has. 

• more
• less
• none of the above
• all of the above 

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

__________ is stored energy. 

• Potential
• Kinetic
• None of the above 
• All of the above 

Tags

NGSS.MS-PS3-2