Question : A stone is shot straight upward with a speed of 20 𝑚/𝑠𝑒𝑐 from a tower 200 𝑚 high. The speed with which it strikes the ground is approximately
(A) 60 𝑚/𝑠𝑒𝑐
(B) 65 𝑚/𝑠𝑒𝑐
(C) 70 𝑚/𝑠𝑒𝑐
(D) 75 𝑚/𝑠𝑒c
Answer : option (B)
Solution :
A stone is shot straight upward with a speed of 20 𝑚/𝑠𝑒𝑐 from a tower 200 𝑚 high. The speed with which it strikes the ground is approximately
with
no comment