When a gas in a container is squeezed to half its volume at constant temperature, the gas pressure

Phil Physiker standing at the edge of a cliff throws one ball straight up and another ball straight down, both with the same speed. Both balls hit the ground at

When Lillian hangs from a pair of gym rings, the upward support forces by the rings will always

A bullet fired from a rifle begins to fall

Perturbations of planets are due to

A school bus slows to a stop with an average acceleration of -2.1 m/s2. Find the time that the bus takes to slow from 9.80 m/s to a stop.  (4 points)

The average speed of Daisy running a distance of 2 km in a time of one-half hour is

A ball is projected into the air with 900 J of kinetic energy that is transformed to potential energy at the top of its trajectory. When it returns to its original level after encountering air resistance, its kinetic energy is

An 800-N man stands at rest with his weight evenly distributed on two bathroom scales. The reading on each scale is

Distinguish between the concepts of mass and weight. Which is more fundamental, and why?