Practice question

Given: A ball is thrown upwards with a speed of 60 m/s . What is the time to reach the maximum height? (Take g = 10 m/s² ) These values define the system as per NCERT data. Formula: At max height, v = 0. This is standard NCERT relation. Substitution & Calculation: Use v = v_0 + a t . Here, v_0 = 60 m/s, a = -10 m/s² . Substitute: 0 = 60 - 10 t Rightarrow 10 t = 60 Rightarrow t = 6 s . The time taken is 6 s . Result: The computed value matches expected outcome and confirms correct choice as per NCERT.