Do the two cars ever have the same velocity at one instant of time? if so, between which two frames? check all that apply. check all that apply. cars have the same velocity at one instant of time between dots 1 and 2. cars have the same velocity at one instant of time between dots 2 and 3. cars have the same velocity at one instant of time between dots 3 and 4. cars have the same velocity at one instant of time between dots 4 and 5. cars have the same velocity at one instant of time between dots 5 and 6. cars never have the same velocity at one instant of time.

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 radius of an atom is closest in size to a

Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s