Asubway train is traveling at a rate of 22.4 m/s. brakes are applied and it slows down at a constant rate of 3.5 m/s2 until it stops at a station. find the total distance traveled while braking. 274 m 142 m 72 m

Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

The star betelgeuse is about 600 light-years away. if it explodes tonight, a. we'll know because debris from the explosion will rain down on us from space.b. we'll know it immediately because it will be brighter than the full moon in the sky.c. we won't know about it until 600 years from now.d. none of the above.

What you see with your eyes is a form of energy. a. light b. heat c. chemical d. electrical