A force does 30000J of work along a distance of 9.5m. Find the applied force.

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.

Most short-period comets do not have randomly oriented orbits because

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