Physics-Energy

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-2

A roller coaster has a mass of 250 kg, and is 50 meters above the ground, what is the potential energy? PE=mgh

• 122,625 Joules
• 5,600 Joules
• 234,799 Joules

Tags

NGSS.MS-PS3-2

A baby carriage that is carrying twins is sitting at the top of a knoll that is 21 m high. The carriage
with the babies are 48kg. What is the Potential Energy of the twins and the carriage? PE=mgh

• 5,524 Joules
• 45,125 Joules
• 9,888 Joules

Japan’s fasted high speed “bullet” trains, also known as the Shinkansen, travel at a speed of 88.9 m/s. It has an estimated mass of 480,000 kg. What is the maximum KE of this train? KE=1/2mv^2

• 259,000 Joules
• 1,896,770,400 Joules
• 10,444,678 Joules

Tags

NGSS.MS-PS3-1

A cheetah can run briefly with a speed of 31.0 m/s. Suppose a cheetah with a mass of 47.0 kg runs at this speed. What is the cheetah’s kinetic energy? KE=1/2mv^2

• 15,500 Joules
• 22,583 Joules
• 15 Joules
• 45,543 Joules

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

You apply a force of ? to a wheelbarrow and moved it 6 m resulting in 48 J of work. How much force did you do on the dresser? w=Fd

• 8 N
• 8 J
• 288 J
• 288 N

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it? w=Fd

• 3.8 m
• 3.7 m
• 3.2 m
• 3.6 m

You apply a force of 18 N to a dresser and move it 3.0 m. How much work did you do on the dresser? w=Fd

• 54 N
• 6.0 J
• 54 J
• 27 J

Tags

NGSS.HS-PS3-1

What is the average power generated by Peter Quill aka Star Lord (m = 100 kg) running up a flight of stairs rising vertically 6 .0 m in 5.0 s? p=w/t, w=Fd

• 0.03 W
• 817 W
• 1176 W
• 1993 W

Groot rescues Rocket from the bottom of a deep pit. Groot expends 1000 J of energy lifting Rocket who has a mass of 50 kg out of the pit. How deep is the pit? PE=mgh

• 0.5 m
• 2 m
• 4 m
• 10 m

Tags

NGSS.MS-PS2-4