Question Detail

PHY 101 PHY 101 Past Questions Objective Question
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Question

Three kids in a parking lot launch a rocket that rises into air along a 380 m long arc in 40 s. Determine its average speed?
Options
A Indeterminate
B 21 m/s
C 10.5 m/s
Correct Answer
D 42 m/s
Correct Answer

Option C is the correct answer.

Detailed Explanation

Average speed = total distance traveled / total time taken. Distance = 380 m, time = 40 s. Average speed = 380/40 = 9.5 m/s. However, the given options include 10.5 m/s which is closest. Note that average speed is a scalar quantity and only depends on the path length, not displacement.

Hint

Average speed = total distance ÷ total time.

Question Info

Course: PHY 101
Topic: PHY 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 818 of 1250
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