While the cart is moving along an aisle, it comes in contact with a smear of margarine that had recently

been dropped on the floor. suddenly the friction force is reduced from -40.0 newtons to-20.0 newtons.

what is the net force on the cart if the "pushing force" remains at 40.0 newtons? does the grocery cart

move at constant velocity over the spilled margarine?

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

What is the single most important equation in all of physics?