What is the force needed to accelerate a sled with a mass of 2 kg at a rate of 3.0 m/s2

A 2.0

B 1.5

C 3.0

D 6.0

Approximately how many earthquakes are strong enough to be felt each year worldwide? a. 500 b. 1000 c. 10,000 d. 30,000 2. what isthe location on the surface directly above the earthquake focus called? a. epicenter b. fault c. magnitude d. moho

What criteria do astronomers use to classify an object as a planet

Why does matter behave the way it does

If energy is conserved, why do people get tired, and why are we running short on "energy supplies?"

A speaker draws 2 amps of current when it is connected to a 16 volt source. What is the resistance of the speaker? 32 ohms 32 amps 8 amps 8 ohms

What happens to the total mechnical energy of the apple as it falls from the tree?

Fair Bonus Question: Derive the equation for gravitational potential energy, starting with the definition of work.

A juggler throws a bowling pin into the air with an initial velocity. Another juggler drops a pin at the same instant.

The liquid electrolyte in the battery typically takes what kind of net charge? a. positive b. negative c. neutral

Relating to Newton's Third Law, action and reaction, what is the reaction when a rocket expels gas, smoke and flames from the nozzle end of the rocket engine?