Explanation:
Since P=W/t
P= 40000/20
P= 2000 Watt(or)Joule per sec
Answer: true
They vary from element to element
For part a we can use the kinematic formula distance= velocity(initial)*time+1/2*acceleration*time^2
we know there is only velocity in the horizontal and none in the vertical so v initial in this case is 0, acceleration is gravity =9.81m/s^2
plug in .95=(1/2)*9.81*t^2 solve for t
t=.44seconds
Now for part b we know there is no horizontal acceleration so distance= velcoity* time
we will use horrizontial velocity and the time we just found
distance= .8m/s*.44seconds
=.35 meters
Answer:
its the first one :)
Explanation:
Is it the one with the three pictures!?