Question

Question-1 A stone is thrown vertically upwards with a velocity 20m/s from the top of a tower 25m high.
Make Calculation for the following parameters:
(i)
The maximum height to which the stone will rise in its flights
Velocity of the stone during the downward travel at a point in the same level as the point of
projection
Time required for the stone to reach the ground.​

Answer 1

Answer:

thanks for the free points

Answer 2

Answer: below are the answers  Please bro mark me brainliest for my efforts to write the whole explanation

Explanation:

1. V²=u²+2as

  0= 20²-2X 10X s

s=20m

2. The velocity is same but in downward direction ie 20m/s

3.s=ut+ 1/2 at²

 20=20t - 1/2 X10Xt²

 5t²-20t+20=0

t=2seconds

for downward journey:

s=ut+ 1/2 at²

20+25=0Xt + 1/2 X10X t²

45=5t²

t²=9

t=3