A20 kg mass with an initial velocity of 10 m/s slides to a stop in 2 meters. what is the net work down on the mass? a.) 250 j b.) 500 j c.) 120 j d.) 20 j e.) none of the above

Aboxcar traveling at 12 m/s approaches a string of 5 identical boxcars sitting stationary on the track. the moving boxcar collides and links with the stationary cars and they all move off together along the track. what is the final speed of the cars immediately after the collision? (you may take the mass of each boxcar to be 18,537 kg.)

Aplane travels 1000 miles in 5 hours .what is the planes average speed?

Aspecimen of oil having an initial volume of 580cm^3 is subjected to a pressure increase of 4.0 mpa, and the volume is found to decrease by 0.40 cm^3. (a) what is the bulk modulus of the material? (b) what is the compressibility of the material?