You estimate the current as 2.5 mph. What is...

Question 1 / 2707066636eea28f7522a1c51b168

Question 1 of 2707066636eea28f7522a1c51b168

You estimate the current as 2.5 mph. What is the speed over the ground?

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Question 1 of 27070

Q

You estimate the current as 2.5 mph. What is the speed over the ground?

🔍 Key Concepts

• Speed over ground (SOG) vs. speed through the water • Effect of current set and drift on your actual speed made good • Using basic vector thinking: when current is with you vs. against you

💭 Think About

• Ask yourself: Is the current helping your motion (same direction) or opposing it (opposite direction) in this problem setup? • How would you combine your boat’s speed through the water and the current speed to get speed over the ground? Add or subtract? • Look at the answer choices: which ones could reasonably result from adding or subtracting 2.5 mph to a likely boat speed given in the full problem?

✅ Before You Answer

• Identify the boat’s speed through the water given earlier in the problem before using the choices. • Decide whether to add or subtract the 2.5 mph based on the relative direction of current and vessel. • After your calculation, check that your result is close to one of the multiple-choice options and not outside the realistic range.

Question 1 of 27070

Q

You estimate the current as 2.5 mph. What is the speed over the ground?

A

11.0 mph

B

8.0 mph

C

6.0 mph

D

5.5 mph

Question 1 / 2707066636eea28f7522a1c51b168

Question 1 of 2707066636eea28f7522a1c51b168

You estimate the current as 2.5 mph. What is the speed over the ground?

Back

Question 1 of 27070

Q

You estimate the current as 2.5 mph. What is the speed over the ground?

🔍 Key Concepts

• Speed over ground (SOG) vs. speed through the water • Effect of current set and drift on your actual speed made good • Using basic vector thinking: when current is with you vs. against you

💭 Think About

• Ask yourself: Is the current helping your motion (same direction) or opposing it (opposite direction) in this problem setup? • How would you combine your boat’s speed through the water and the current speed to get speed over the ground? Add or subtract? • Look at the answer choices: which ones could reasonably result from adding or subtracting 2.5 mph to a likely boat speed given in the full problem?

✅ Before You Answer

• Identify the boat’s speed through the water given earlier in the problem before using the choices. • Decide whether to add or subtract the 2.5 mph based on the relative direction of current and vessel. • After your calculation, check that your result is close to one of the multiple-choice options and not outside the realistic range.