Sample Problem 2. When a ball is thrown vertically upwards, it goesthrough a distance of 19.6 m. Find the initial velocity of the ball and the timetaken by it to rise to the highest point. (Acceleration due to gravity,8 -98 m/s)h so its

Sample Problem 2. When a ball is thrown vertically upwards, it goesthr

1.	Sample Problem 2. When a ball is thrown vertically upwards, it goesthrough a distance of 19.6 m. Find the initial velocity of the ball and the timetaken by it to rise to the highest point. (Acceleration due to gravity,8 -98 m/s)h so its
Answer» <p>Let initial velocity = u m/stime taken to rise to highest point = t secondfinal velocity at highest point = 0g = -9.8 m/s²distance travelled = 19.6 m</p><p>d = (v² - u²)/2a⇒ 19.6 = (0 - u²)/2×(-9.8)⇒ 19.6 = u²/19.6⇒ u² = 19.6×19.6⇒ u = 19.6 m/s</p><p>v = u+at⇒ 0 = 19.6 - 9.8t⇒ 9.8t = 19.6⇒ t = 19.6/9.8⇒ t = 2s</p><p>Initial velocity = 19.6 m/stime taken to reach highest point = 2s</p> <p>thank you</p>