If a runner speeds up from 3 m/s to 9 m/s over a time of 2,3 seconds how much is the change in momentum if the force is 142 N?

Natural forces that can alter ecosystems include seasons and climate changes. t or f

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Acaterpillar tries to climb straight up a wall a meter high, but for every 2 cm up it climbs, it slides down 1 cm. eventually, it reaches the top. when it reaches the top, it does not pull itself over so it will slide down 1 cm. what is the total displacement traveled?