Question

*For questions 2 to 5 : A stone thrown vertically upward with a velocity of 40 m/s. (g = 10 m/s)*
What is the maximum height reached by the stone?
(A) 40m
(B) 60 m
(C) 80 m
(D) 120 m
3.
How long does it take to reach the highest point ?
(A) 2s
(B) 45
(C) 6
(D) Ss
4.
What is the velocity of the stone at t = 2s?
(A) 40 m/s
(B) 30 m/s
20 m/s
(D) 10 m/s
5.
What is the velocity of the stone when it is 40 m above the ground, while moving upwards?
(A) 50 m/s
(B) 30 m/s
(C) 20 m/s
(D) 2012 m/s​

Answer 1

Answer:

i) max height = 80m

ii ) time taken to reach the maximum height = 4sec

iii ) at  t =2s the velocity = 20m/s

 iv) v = 30m/s

Explanation: