A football is kicked at ground level with a speed of 18.6 m/s at an angle of 44.9 to the horizontal. How much later does it hit the ground ?

t = 3.79 s

Explanation:

We have,

A football is kicked at ground level with a speed of 18.6 m/s at an angle of 44.9 to the horizontal.

It means that,

Initial speed of a football, u = 18.6 m/s

Final speed of a football, v = 0 (when it hits the ground)

It would under the action of gravity. Let t is the time of motion. So, using equation of kinematics to find it.

v=u+at

a=-g

The total time before the ball hits the ground is the sum of time taken to come down and time taken to go up. So, total time is 2×1.89 = 3.79 s

sleep paralysis is a parasomnia, events associated with sleep.

sleep paralysis happens when you are in the middle of waking up or falling asleep. it is the feeling of being conscious but unable to move. it definitely involves hallucinations.

i had a friend that had sleep paralysis and he told me a story one time where he was laying in bed and he couldn't move his body no matter how hard he tried and there was someone standing in the corner of his room coming towards him. he couldn't move and you can't "wake up" because you are already conscious. sometimes sleep paralysis can be triggered by frequent waking up during the night based off of multiple trips to the bathroom, or if you had ever been abused, sleep paralysis can start happening from things like that.

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )