GKFix MCQ Question

A ball is thrown upward with 20 m s⁻¹. What is its velocity after 1 second? (g = 10 m s⁻²)

• A. 10 m s⁻¹
• B. –10 m s⁻¹
• C. 30 m s⁻¹
• D. 0 m s⁻¹