20 poir 4. A cyclist rides up a mountain path. If the horizontal displacement is 10
km and the vertical displacement is 5 km, what is the magnitude of the
resultant displacement?
5Km
11 Km
16Km
22Km

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

Which system of units is used by only a small number of countries in the world, including the u.s.