Why do the astronauts float inside space stations?

A 2,000 kg car is moving at 15m/s when it collides with a 1200kg car sitting still. Briefly compare the impulse imparted on the 1200kg car by the 2000 kg car to the impulse on the 2000 kg car by the 1200 kg car which car under goes the greater

A 1020 kg car is pulling a 310 kg trailer. Together, the car and trailer have an acceleration of 2.00 m/s2 directly forward. (a) Determine the net force on the car. N forward (b) Determine the net force on the trailer. N forward

A 12 kg ball moving at 20 m/s strikes another ball at rest. After a completely inelastic collision, the balls move at 10 m/s. What was the mass of the second ball?

Simon puts new batteries in his radio-controlled car and its controller. He activates the controller, which sends a radio signal to the car. The car moves forward. Name at least three energy transformations that occurred.

Which of the following is a direction that a mechanical wave can displace its medium? Check all that apply. A. Mechanical waves don't require a medium. O B. Perpendicular to the motion of the wave. O C. Parallel to the motion of the wave. O D.

Identify the following as combination, decomposition, replacement, or ion exchange reactions: Al (s) + 3 Cl2 (g) → 2 AlCl3 (s) Ca (OH) 2 (aq) + H2SO4 (aq) → CaSO4 (aq) + 2 H2O (l

What is a moving mass of water called?

Before the positive psychology movement, psychology focused mainly on

in terms of loudness and pitch how would you compare the sounds made by a mosquito flying near your ear and the croaking of a bullfrog?

Identify whether the following scenarios involve balanced (B) or unbalanced (U) forces: a) A car stopping at a red light b) A ball rolling down a hill c) An airplane flying at constant speed at the same altitude in one direction d) An airplane