If a person were to drop a feather and a brick from the top of a building, they would both land at the same time if there was no

sliding friction
starting friction
rolling friction
drag

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

Which of the following is not am example of a polymer? protein nylon kevlar concreta

What do you think car designers do if the damage caused by a crash test is too severe?