If the box weighs 40 newtons and is lifted a distance of 2 meters, how much work is done on the box?

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.

What is the mass of the same rock on the earth

Which of the following is an example of units for speed