Physics, asked by sahbahasan, 1 year ago

A stone is dropped from from a height of 20 m. Calculate-
a) time taken to reach ground
b) speed of the stone when it hits the ground. (Take g = 10 m/s²)


chandraharish: Physics again vaise kahan se dhoond kar diya hai ye ques I guess its not from s chand
sahbahasan: from s chand only....

Answers

Answered by chandraharish
5
v2=u2+2as
   =02+2*10*20
   =400
v=√400
v=20
Now
v=u+at
20=0+10t
t=20/10
t=2
hope it helps

chandraharish: Which question?
sahbahasan: i will post it, not here, but on the homepage.
chandraharish: Ok
chandraharish: Thanks 4 marking the best
sahbahasan: welcome, actually it was the best indeed....
chandraharish: schand ka koun sa ques no hai
sahbahasan: from chap-3 q no. - i don't know
chandraharish: fantastic u ve reached ch 3
sahbahasan: no, bas book ke page palat rahi thi, ques mila puch liya.
chandraharish: Pages palatne ke liye bhi physics ki book hi mili thi
Answered by shanju
1
v²=u²+2as
  =0²+2×10×20
   =400
   v =√400
v=20m/s
 v =u+at
20=0+10t
t=2sec

Similar questions