If the crate shown here is moving at a constant speed in a straight line, and the force applied is 310 n, what is the magnitude of the force of friction?.

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

Select all of the following that are equal to an impulse of 20 unitsa) force= 5, time= 5.5b) force= 25, time= 0.8c) force= 0.1, time= 200d) force= 10, time= 2(its b, c, and d)(also in order to find answer they have to add to get the unit)ex= 25x.8=20 or .1x200=20