JAMB Physics 2019 Objective — Question 25
Question 25 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2019 Objective paper, with the correct answer and a full explanation.
Advertisement
A boat travels due east with a speed of 40m/s across a river flowing due south at 30m/s. What is the resultant speed of the boat?
- A. 1.3m/s
- B. 10m/s
- C. 50m/sCorrect
- D. 70m/s
Explanation
By Pythagoras' theorem: V_R²=40²+30²=1600+900=2500 ⇒ V_R=√2500=50m/s.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.