Power Work Force Problems

Olivia's bus traveled along a flat horizontal road. The bus weighs 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-PS2-2

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-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-PS2-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following is a unit of power?

• Joule

• Watt

• Newton

• Pascal

Tags

DOK Level 1: Recall

Power is measured in which units?

• Newtons

• Joules

• Watts

• Joule/sec

The dog picked up a big branch onto his mouth in 6 seconds. What is the power of the dog if it has the work of 50 J?

• 8.33 W

• 56 W

• 44 W

• 300 W

A boy was carrying 10 books are once that weights 10kg. He applied a 150N force, so he obtained a distance of 30m in one minute. What is the power of the boy?

• 0 W

• 25 W

• 50 W

• 75 W

Tags

NGSS.MS-PS3-5

The runner applied a 40N force in order for him to speed up from the start. If he traveled 5km after 1 hour, what is his power?

• 0.55

• 5.555

• 55.55

• 555.5

A steel cabinet that weighs 40 kg is lifted by a set of pulleys to height of 15 meters. If the lift happens in 3 minutes, how much power is used. (The acceleration is 9.8m/s²)

• 2.18 W

• 32.67 W

• 3.33 W

• 1960 W

Tags

NGSS.MS-PS2-4