A sled slides 100 m down a hill that slopes at an angle of 30° with the horizontal direction.
The sled attains a final velocity of 20 m s ' at the
base of the slope. What fraction of the energy was
lost due to friction'!​

An object starts from rest at point f and speeds up continuously as it moves around an oval. a. choose a point about 1/8 th of the way around the oval from point f, and label it point g. draw a vector to represent the velocity of the object at point g. b. determine the change in velocity vector   between points f and g.

In the first law of thermodynamics, triangle e=q-w, what does q stand for

How can you increase the strength of an electromagnet?