At time t 0 an object of mass w is thrown straight upward i

At time t = 0, an object of mass w is thrown straight upward into the air from ground level with an initial speed r0. If there i* no resistive force, find the following quantities: the time at which the object reaches its maximum height the maximum height reached by the object Now suppose that there is a resistive force f = In this case, find the following quantities to lowest order in: how much sooner the object readies its maximum height how much lower the maximum height is

Solution

When object reaches the maximum height the final velocity =0

a)Therefore using the formula v = u - gT [ v= 0 u = v0 ]

=> T = v0/g

b) For Maximum height

we use the formula v2 = u2 - 2gH [ v= 0 u = v0 ]

=> H = v0²/2g