A bowling ball that is standing on a still table ___

may start to move on it's own and then fall off

will not move unless acted on by another force

will accelerate if left on its own

has too much inertia to move

Which is an example of inertia? A moving car changes direction. Increasing the velocity of a train makes it harder to stop. Adding mass to a moving car makes it harder to stop.

Can a reaction force ever be greater or less than an applied force? Explain.

An electron is accelerated by a 3.6 kv potential difference. the charge on an electron is 1.60218 * 10-19 c and its mass is 9.10939 * 10-31 kg. how strong a magnetic field must be experienced by the electron if its path is a circle of radius 5.

What would happen if you touched the knob of a positively charged electroscope with a negatively charged object

Near the surface of the moon, the distance that an object falls is a function of time. It is given by d (t) = 2.6667t2, where t is in seconds and d (t) is in feet.

A 20kg box is dropped 13m. how much work is done

Suppose a person whose mass is m is being held up against the wall with a constant tangential velocity v greater than the minimum necessary. Find the magnitude of the frictional force between the person and the wall

A ball is being rolled by a normal push of 1000N. it is opposed by friction which has a force of 0.3kN and air resistance which has a force of 23N. Calculate the resultant force.

Consider a Young's two-slit experiment in which the wavelength of light is 37% smaller than the distance between the slits.

Which of the following situations would produce an average velocity of zero? A) a round-trip to school and back B) a horse galloping in a field C) the criss-crossing path of a flying bug D) a trip, first to the moon, then onto Mars