Spaceship 1 and spaceship 2 have equal masses of 200 kg. they collide.
spaceship 1's final speed is 2 m/s, and spaceship 2's final speed is 1 m/s in
the same direction. what is their combined momentum?
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a. 200 kg-m/s
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o
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b. 400 kg-m/s
c. 800 kg-m/s
d. 600 kg-m/s

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational

In a heat engine if 1000 j of heat enters the system and the piston does 500j of work, what is the final internal energy of the system if the inital energy was 2000 j1.write the equation2.list out your known variables 3. plug the numbers into the equations4.solve 5.write your solution statement that includes initial energy and final energy added.

The force it would take to accelerate an 900-kg car at the rate of 6m/s2