A child drops a ball from a window. The ball strikes the ground in 3 seconds. What is the velocity of the ball the instant before it hits the ground?

Accelerating object are objects that are changing their velocity. name the three controls on an automobile that cause it to accelerate

A 700-watt gasoline engine and a 300-watt electric mother. Which machine can do more work faster?

Which of the following colors is associated with the lowest temperature? Explain your reasoning. A. Blue B. Green C. Yellow D. Red

A sled is pushed with 30 Newtons and sliding friction is 10 Newtons find the net force on the sled

How much heat is needed to warm 0.072kg of gold from 20 celsius and 90 celsius if the specific heat of gold 136 joules

What career has to do with one of these listed ... fossil fuels, nuclear energy, biomass, hydropower, solar energy, geothermal energy, or wind energy.

An object is suspended from the ceiling with two wires that make an angle of 40° with the ceiling. The weight of the body is 150 N. What is the tension in each wire? 41.6 newtons 82.3 newtons 150 newtons 117 newtons

What is the value of 9682 when rounded to three significant figures

Why do atoms move at different speeds depending on wether they are liquids or solids

What are the arrangement of resistors in series