JAMB Physics 2019 Objective — Question 18

Question 18 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2019 Objective paper, with the correct answer and a full explanation.

An object was launched with velocity of 50m/s at an angle of 30° to the horizontal, the maximum height reached is:

• A. 55m
• B. 30m
• C. 31.25mCorrect
• D. 11.1m

Explanation

Vertical component Uᵧ=50sin30°=25m/s. At maximum height V=0: 0²=25²+2(−10)Hₘₐₓ ⇒ Hₘₐₓ=625/20=31.25m.

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