7) A6 kg ball is thrown at 12 m/s. What is the momentum of the ball before it strikes a pin?
8) A car crashes into a wall with a momentum of 15,000 kgm/s. What is the velocity of the car that
has a mass of 800 kg?
9) A 400 g ball of clay is thrown a 25 mph toward a wall. What is the momentum of the ball before it
strikes the wall?

You notice a very one-dimensional-thinking snail crawling along one rail of a railroad track. naturally, you remove it to a safer place. but before you do, you observe it as it moves from position xi = -92.9 cm to position xf = -64.9 cm along the rail, as measured from a point where one rail abuts the next. what is the snail\'s displacement δx in centimeters?

The heliocentric and the geocentric models of the solar system included these central principles

Aphoton is absorbed by an electron that is in the n = 3 state of a hydrogen atom, causing the hydrogen atom to become ionized. very far away from the nucleus, the released electron has a velocity of 750,000 m/s. what was the wavelength of the absorbed photon?