23
QuizMultiple Choice

Projectile Motion

Question 23 • [HSPHY] Physics Sem 1 (26-27)

An object moving north with an initial velocity of 14 m/s accelerates 5 m/s2 for 20 seconds. What is the final velocity of the object?

Answer
A
39 m/s
B
90 m/s
C
114 m/s
D
414 m/s

Explanation

Use the constant-acceleration equation: final velocity = initial velocity + (acceleration × time). Substituting the values gives 14 m/s + (5 m/s² × 20 s) = 114 m/s, so the final velocity is 114 m/s (choice C).

AI-written and checked against the verified answer.

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