They do it when they are moving for a while or they are going fast
Answer:
Vf = Vi + a t fundamental equation
-60 m/s= Vi - 9.8 m/s^2 * 6 sec taking upward direction as positive
Vi =58.8 m/s - 60 m/s = -1.2 m/s so the coin was initially thrown downward
As a check take the downward direction as positive
Vf = 1.2 m/s + 58.8 m/s = 60 m/s
Answer:
Force= 1000 Newtons. Distance= 150 metres. Work= 150000 Joules. So, the work done by crane that lowers 1000 Newton's of a material a distance of 150 meters is 150000 Joules.
Explanation:
Below is an attachment containing the solution.
Did you mean waves??
and no
