What is the acceleration (in m/s2) of a car going around a 500 m radius turn at a speed of 25 m/s?
a) 1.25
b) 5.33
c) 0.333
d) 0.45

What is relative velocity? in which condition is relative velocity known by adding the velocity of the first body and that of the second body

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.

Suppose astronomers built a 140-meter telescope. how much greater would its light-collecting area be than that of the 10-meter keck telescope? express your answer using two sign