Answer:
6.49707626552 m/s
4.45147808359 m
1.46212197842 s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration
g = Acceleration due to gravity = 9.81 m/s²
The speed with which Sam releases the ball is 6.49707626552 m/s
The ball reaches a height of 2.3+2.15147808359 = 4.45147808359 m
Distance to his head from the maximum height is 4.45147808359-1.83 = 2.62147808359 m
Time taken to go down to his head is 0.731060989212 seconds from the maximum height
Time taken from the moment the ball left his head height = 0.731060989212+0.731060989212 = 1.46212197842 s
Answer:
If the present earth is squeezed to the size of moon, the acceleration due to gravity will be increased by about 14 times since, acceleration due to gravity is inversely proportional to the square of radius if mass is constant.
Answer:
Explanation:
When y(t) = 0, the ball is on the hand.
It takes 1 second.