A runner accelerates at a rate of 3a from a velocity of 2V to 4V. Solve for: a) the time for this acceleration to occur

b) the distance traveled by the runner

True or false: the cycle of seasons on the earth is caused by the tilt of the earth on its axis toward and away from the sun.

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 5.5 cm? answer in units of t.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?