Why is it harder to get something moving than to keep it moving?

If the "fuel" for nuclear fusion is nuclei of hydrogen, and the earth's oceans are filled with hydrogen atoms all being jostled together, why isn't there a lot of fusion happening in our oceans?

An object traveling in a straight line accelerates. What will definitely happen due to the acceleration?

Which of the following is a product of respiration resulting from the breaking of carbon-carbon bonds

I traveled 6.00 km to school in 0.250 hours. What was my average speed

In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 2.40 s later, at distance d = 27.0 m from the building and at angle θ = 59.0° with the horizontal. (a) Find h.

How much heat is absorbed by a 29g iron skillet when its temperature rises from 9oC to 105oC?

If the voltage of the secondary side of the transformer is less than? and the voltage of the primary side of the transformer exceeds? to ground, the secondary side shall be grounded.?

What is the mass of a 3920 Newtons desk

Find the average speed of a horse that traveled east for 25km in 4 hours.

One astronomical unit, or one AU is defined as the: A. Distance traveled by light in one year B. Mean distance between the Sun and the Earth C. Distance from which Earth-Sun distance will D. Distance traveled by light in one second.