a boy throws a ball upwards and catch it back after 8 second then determine what will velocity the ball is through a purse at the height the velocity of ball will be zero 9.8 metre per second square is g
Answers
Answered by
2
Answer:
Let the initial velocity (velocity by which ball was thrown be u).
Then final velocity v = 0.
Acceleration a = 9.8 m/s2.
From 1 eq of motion :
V = u + at
0 = u + - 9.8 ☓ 8.
U = 78.4 m/s
I I) let the height to which ball rises be h. Then,
V = 0, u = 78.4, a = 9.8 m/s2
From 3 eq of motion :
V^2 = u^2 + 2ah
0 = 78.4 ☓ 78.4 + 2 ☓- 9.8 ☓ h.
0 = 6146.56 - 19.6 h
19.6 h = 6146. 56 m
h = 313.6 m
__________________________
Note : a = acc due to gravity = 9.8 m/s2
If u take it as 10 then ans may vary.
The v = 0 at the highest point to which the ball rises
please mark the brainliest
Similar questions
Math,
5 months ago
Chemistry,
5 months ago
Science,
9 months ago
Chemistry,
9 months ago
Political Science,
11 months ago