Manuel2019
05.11.2019 •
Physics
If a ball is thrown vertically upward with a velocity of 80 ft/s, then its height after seconds is =−. (a) what is the maximum height reached by the ball? (b) what is the velocity of the ball when it is 96 ft above the ground on its way up? (c) what is the velocity of the ball when it is 96 ft above the ground on its way down? if a ball is thrown vertically upward with a velocity of 80 ft/s, then its height after seconds is =−. (a) what is the maximum height reached by the ball? (b) what is the velocity of the ball when it is 96 ft above the ground on its way up? (c) what is the velocity of the ball when it is 96 ft above the ground on its way down?
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Ответ:
100 ft
16 ft/s
16 ft/s
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 32 ft/s² (negative upwards and positive downwards)
The function here is of the form which is one of the equations of motion
From another equation of motion
The maximum height the ball will reach is 100 ft
When s = 96 ft
The velocity of the ball when it is 96 ft above the ground on its way up is 16 ft/s
On the way down when it will be 96 ft above the ground it would travel 100-96 = 4 ft from the maximum height
The velocity of the ball on the way down when it is 96 ft above the ground is 16 ft/s
Ответ:
the top right
Explanation:
a reflection is when light hits a surface, then bounces off. all of the others go through or not, creating a shadow, but the top right is the only one that reflects.