A3.0 kg block is acted upon by a horizontal force f(x) = 26.0 - 9.0x where the force is measured in newtons if x is measured in meters. the coefficient of kinetic friction between the block and the flat surface is 0.20. the block is initially at x = 0 m. what distance must the block travel if the net work done on the block by f(x) and friction combined is to be exactly zero?

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 will a positive and a negative charge do if they are separated from each other?

Why don't you see your reflection in water with waves or repples