The electric force felt by a charged particle as the particle is moved toward another charged particle. a. increases b. decreases c. stays the same d. charged particles do not experience electric forces.

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

What is the kinetic energy of a baseball moving at a speed of 40 m/s if the baseball has mass of 0.15 kg?