Answer:
The water acts like a lubricant therefore has a smooth motion over the ice.
12 increase When force is multiplied by the distance over which it is applied, that amount is given ... force * distance = work
Sound waves....................................
(105 N/m) x (0.1 m) = <em>10.5 Newtons</em>.
Answer:
1440 W
Explanation:
First of all, we can find the total displacement of the sled, which is given by

where
a = 0.08 m/s^2 is the acceleration
t = 1 min = 60 s is the time
Substituting,

Now we can find the wotk done on the sled, equal to the product between force and displacement:

And finally we can fidn the average power, which is the ratio between the work done and the time taken:
