Neco Model Questions Vol1 2020 Physics Question 10

Practice objective / multiple choice question 10 from the 2020 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2020 Physics Objective / Multiple Choice Medium Difficulty
Question 10 NECO_MODEL_QUESTIONS_VOL1 • 2020 • PHYSICS • objective

A boat can travel at \(5.0\) m s\(^{-1}\) in still water. It must cross a river that is \(200\) m wide, whose current flows uniformly at \(3.0\) m s\(^{-1}\). (a) If the boat heads directly across the river (perpendicular to the banks), find the time taken to reach the opposite bank and the downstream displacement of the boat. (b) To land directly opposite its starting point, at what angle upstream from the perpendicular must the boat be aimed? Give the angle to the nearest degree.

Answer Options

A. (a) 45 s, 135 m downstream; (b) 40° upstream from the perpendicular
B. (a) 30 s, 90 m downstream; (b) 30° upstream from the perpendicular
C. (a) 50 s, 150 m downstream; (b) 45° upstream from the perpendicular
Correct Answer D. (a) 40 s, 120 m downstream; (b) 37° upstream from the perpendicular
Correct Answer
D
Correct Option:
(a) 40 s, 120 m downstream; (b) 37° upstream from the perpendicular

About This Question

This is Neco Model Questions Vol1 2020 Physics Question 10. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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