If two carts of equal mass and equal but opposite velocity collide elastically, how will they move after the collision? What if the collision is perfectly inelastic?

How many neutrons does element x have if it’s stormy umber is 33 and it’s mass number is 95?

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?

You are driving directly behind a pickup truck, going at the same speed as the truck. a crate falls from the bed of the truck to the road. (a) will your car hit the crate before the crate hits the road if you neither brake nor swerve? (b) during the fall, is the horizontal speed of the crate more than, less than, or the same as that of the truck?