You pushed on a crate with a force of 10 N, and it moved 2.5 m/s. How much power did you produce as you pushed? 25 W
O 4W
0 245 W
0 39.2 W

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.

There are weak or strong attractive forces between atoms of liquids with a high viscosity

The crank oa rotates in the vertical plane with a constant clockwise angular velocity ω0 of 5.6 rad/s. for the position where oa is horizontal, calculate the force under the light roller b of the 10.6-kg slender bar ab.