A bird sitting on the limb of a tree is moving about 30 km/s with respect to the Sun. If the bird takes 1 second to drop down to a worm below, the worm would be 30 km downrange from the bird when it reached the ground. This faulty reasoning is best countered with Newton’s

Compared to the speed a satellite loses when traveling from nearest to farthest points from Earth, the speed gained when returning from farthest to nearest is

The internal pressure of a fluid that gains speed

The speeds of the planets about the Sun depend on

A flask brim filled with water is on a weighing scale. If you float a piece of wood in it, after spillage away from the scale, the scale reading will be

The planet Jupiter takes a longer time to travel around the Sun than Earth because Jupiter

A commercial jet has a mass of 5000 kg. During takeoff the thrust of its engine is 10,000 N, producing an acceleration of

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

You do work on a cart loaded with groceries. If you do this work in one-third the usual time, you expend

Arnold Strongman wearing socks and Suzie Small in gym shoes have a tug-of-war on a polished floor. The likely winner is