Which has more momentum, a 0.5kg toy car moving a 5 m/s or a 1000kg real car that is parked? Explain why.

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)

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?