Question

Directions: ● Refer to this Grade 8 Physics Reference Sheet and your knowledge of science to solve Problems 1–7. Show your work and use correct units of measurement. Problems: Use the information below and your knowledge of science to answer Questions 1 and 2 that follow. A tugboat pulls a ship with a constant net horizontal force of 5,000 N and causes the ship to move through a harbor.

F >>> 5000 N

1. How much work is done on the ship if it moves a distance of 30 m? 2. Calculate the power exerted by the tugboat if the ship moved 30 m in 160 s?

Answer 1

[AI-generated answer — Bot GPT 3.5]

1. Work = force x distance

Work = 5000 N x 30 m
Work = 150,000 Nm
Work = 150,000 J

Therefore, 150,000 Joules of work is done on the ship if it moves a distance of 30 m.

2. Power = work / time
Power = 150,000 J / 160 s
Power = 937.5 W

Therefore, the power exerted by the tugboat is 937.5 Watts if the ship moved 30 m in 160 s.