Can anyone help me I will give you 30 points

The slope of a velocity time graph over any interval of time gives the during that interval

The uniform slender bar rests on a smooth horizon- tal surface when a force f is applied normal to the bar at point a. point a is observed to have an initial acceleration aa of 20 m/s2, and the bar has a corre- sponding angular acceleration of 18 rad /s2. deter- mine the distance b.

What energy transformations occur each time the skateboarder rolls up the ramp?