Work, Power, and Energy Problem Solving

Olivia's bus traveled along a flat horizontal road. The bus weights for about 150kg. If it traveled 50m to the west after 30 seconds of travelling with 60N force, what is the Work done?

• 1500 J

• 3000 J

• 7500 J

• 9000 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A 1kg cart moves away from the rest. What will be its Work done if it traveled 8m to the right, and the force applied to it is 30N east?

• 8 J

• 30 J

• 240 J

• 300 J

Santa carries a 6kg gift from the ground. He carried it 2m high in the air. If the acceleration of the earth is 9.8m/s², what is the work done by gravity?

• 1.176 J

• 11.76 J

• 117.6 J

• 1176 J

Tags

NGSS.MS-PS2-4

A 1500g toy car traveled 1km to the east. What is the work done if the acceleration of the earth is 9.8m/s²?

• 1.5 J

• 14.7 J

• 1500 J

• 14700 J

Tags

NGSS.MS-PS3-4

A cart travelled at a velocity of 34m/s East after 1 minute. If it was applied with 50N force, what is the Work done by the cart?

• 12240 J

• 1700 J

• 15250 J

• 102000 J

Tags

NGSS.MS-PS3-4

What is the Kinetic Energy of a 20kg wheel rolling down the hill at a rate of 15m/s?

• 150 J

• 300 J

• 2250 J

• 4500 J

Tags

NGSS.MS-PS3-1

A roller coaster ride has a height that ranges from 20m to an unbelievably high height. The 60kg coaster car stopped at the peak of the ride. The peak's height is twice the lowest height of the ride. What is the coaster car's potential energy if the acceleration by earth us 9.8m/s²?

• 196 J

• 588 J

• 11760 J

• 23520 J

Tags

NGSS.MS-PS3-2

I found an old spring coil on my attic. It used to stretch 2 meters and has a spring constant of 20 N/meter before. But now, the stretch and spring constant is halved because of the rust. Find the elastic potential energy of my spring coil today.

• 5 J

• 10 J

• 20 J

• 40 J

Tags

NGSS.MS-PS3-2

There is a family who used their car to go to the mall. Before the car stopped, it moved at a rate of 40m/s for 2 minutes. If we are finding the kinetic energy of a 200 kg parked car in the parking lot, what will be the answer?

• 1 600 J

• 16 000 J

• 160 000 J

• None of the Above

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the potential energy of a 4kg guitar on top of the stage that measures 0.01km in height if the acceleration of the earth is 9.8m/s²?

• 0.392 J

• 392 J

• 0.04 J

• 39.2 J

Tags

NGSS.MS-PS3-2