Al and Ben are on roller skates and Al rolls into Ben. Al exerts a force of 30 N on Ben when they collide. Explain what force Ben exerts on AI.

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

How do we measure or think of speed in the united states?

Explain what happens at the saturation point when adding salt to water at room temperature.