An object is thrown vertically upward withinitial velocity of 50m/s find the maximum height reached by the object

You need to give more detail, such as where is he standing? Is it just assuming that it starts off at 0 feet? or is the person 6 feet tall so he throws it lets say 45 feet instead of 39 feet?

Answer: it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.explanation:   we have equation of motion ,where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.average velocity = displacement/ time taken.average velocity = 10.69 miles/hr = 10.69*1.6*1000/(60*60) = 4.75 m/s4.75 = s/ts = 4. 1we also have acceleration = 2.18 m/s², initial velocity = 0 m/sso it will take   4.36 seconds to reach her average velocity 10.69 miles/hour.