A 40.0 kg physics student at rest on a frictionless rink throws a 3.0 kg box, giving the box a velocity of 8.0 m/s. Which statement describes the initial velocity of the student after the box is thrown? a. 0.6 m/s in the same direction as the box.
b. 0.6 m/s in the opposite direction of the box.
c. 1.7 m/s in the same direction as the box.
d. 1.7 m/s in the opposite direction of the box

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

Which of the following is an example of motion in two dimensions?

If a simple machine reduces the strength of a force, what must be increased?