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Question 5. A stone is dropped from the top of a 40 m high tower. Calculate its speed after 2 s. Also find the speed withwhich the stone strikes the ground.Answer:​

Answer»

is dropped from the TOP of a 40 m(HEIGHT) HIGH tower.Time(t) = 2 sec.Initial Velocity(u) = 0 Gravitational Acceleration(g) = 9.8 m/s² Find the speed with  which the stone strikes the ground.According to the First Condition :-Speed After 2 Seconds.Now, Put the VALUE in this Formula :-Therefore,The Speed of stone after 2 second will be 19.6 m/s.∴We know that :-Therefore,Speed with which the stone strikes the ground is 28 m/s.



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