A 2,511 kg railroad car moving at 4.192 m/s to the east collides with a 8,199 kg railroad car moving at 3.781 m/s to the west. If the cars couple together, what is their velocity after the collision?

A 100 kg individual consumes 1200 kcal of food energy a day. Calculate (a) the altitude change, in m, if the food energy content was converted entirely into lifting the indi- vidual under normal earth gravity.

Which statements define factors that contribute to the decline of Roman Empire

Why can people float effortlessly on the dead sea?

IF your mass is 40 kg, what is your weight on earth

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova

A 7700-kg box car traveling at 14 m/s strikes a second car at rest. The two stick together and move off with a speed of 5.0 m/s. What is the mass of the second car?

What will happen if there is a change in a magnetic field?

Question 2 10 pts The voltage in a particular circuit is 10.0 V. The current in the circuit is 20 A. What is the resistance? A. 2.0 B. 30 C. 200 D. 0.5

Where in the motion is the magnitude of the net force on the object a maximum? where in the motion is the speed a maximum?

Which movies are longer than 2 hours?