If a falling object gains 20m/s each second it falls, its acceleration is

Rain drops fall on a tile surface at a density of 4585 drops/ft2. There are 15 tiles/ft2. How many drops fall on each tile? Answer in units of drops/tile.

An inventor designs a model plane that uses the emf that develops across its metal wings as it flies through the earth's magnetic field to power the plane's propeller. Will this plane be able to power itself this way?

Objects A and B both start at rest. They both accelerate at the same rate. However, object A accelerates for twice the time as object B. What is the final speed of object A compared to that of object B?

Defined as how much energy it takes to perform a specific amount of work. A.) Machine B.) Friction C.) Efficiency D.) Mechanical Advantage

An eagle has a mass of 8 kg and is flying 85 m above the ground with a speed of 20 m/s. what is the total mechanical energy of the eagle?

Jack rolled a marble down a ramp and recorded the potential energy and kinetic energy of the marble at different positions on the ramp, as shown in the table.

Protons are the smallest particle of an element that retains the original Characteristics of the element. True or False

A 5kg rock and a 10kg rock are dropped from a height of 10m?

A train accelerates from a station with a = 1.841m/s? Upon reaching a speed of 23.52m/s the train travels at a constant velocity for a period.

A what is used to measure air pressure.