Electrical energy is converted into kinetic energy in

For general projectile motion, when the projectile is at the highest point of its trajectory, its acceleration is zero? a)the horizontal and vertical components of its velocity are zero. b) its velocity is perpendicular to the acceleration. c)the horizontal component of its velocity is zero. d)its velocity and acceleration are both zero.

The earth exerts a gravitational force of 500 n on amy. what is amy’s mass in kg?

Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine