Margie and Bill, both with brand new roller blades, are at rest facing each other in the parking lot. They push off each other and move in opposite directions, Margie moving at a constant speed of 6 m/s and Bill moving at 3 m/s. The mass of the Margie is 50 kg, what will be the mass of Bill? O 50 kg 150 kg O 25 kg O 100 kg

Imagine you are ice skating with your best friend. Both of you are at rest when you shove him/her away from you. You have a mass of 55 kg and he/she has a mass of 45 kg. When you shove off, you move away with a velocity of 2.0 m/s. With what velocity does your best friend move away from you?

An astronaut floating at rest in space has run out of fuel in her jetpack. She realizes that throwing tools from her toolkit in the opposite direction will help propel her back toward the space station. If the astronaut has a mass of 85 kg and she throws a hammer of mass 4.5 kg at a speed of 4 m/s, what will be the approximate resultant velocity that carries her back to the space station?

An overnight rainstorm has caused a major roadblock. Three massive rocks of mass m₁ = 514 kg, m₂ = 7.00 x 10² kg, and m3 = 366 kg have blocked a busy road. The rocks are lined up from left to right in the order m₁, m2, and m3. The city calls a local contractor to use a bulldozer to clear the road. The bulldozer applies a constant force to m₁ in order to slide the rocks off the road. Assuming the road is a flat, frictionless surface and the rocks are all in contact, what force, FA, must be applied to m₁ to slowly accelerate the group of rocks from the road at 0.400 m/s²? Use the value for FA to find the force, F12, exerted by m₁ on m₂. FA = F12 = N N