What is the Kinetic Energy of a tennis ball after 40.0cm of freefall?

Why does a helium balloon rise in the air while an ordinary balloon filled with air does not?

What is the abbreviation for mojave desert?

A 68 kgkg driver gets into an empty taptap to start the day's work. The springs compress 2.1*10-2 mm. What is the effective spring constant of the spring system in the taptap?

A sailboat accelerates at a rate of 2 m/s? and has a mass of 800 kg. What is the net force acting on the sailboat? Answer

The force of gravity between two odjects depends on

An AC generator has 80 rectangular loops on its armature. Each loop is 12 cm long and 8 cm wide. The armature rotates at 1200 rpm about an axis parallel to the long side. If the loop rotates in a uniform magnetic field of 0.

How fast would the moon need to travel in order to escape the gravitational pull of Earth, if Earth has a mass of 5.98 X 1024 kg and the distance from Earth to the moon is 3.84 x 108 m?

6. A technlclan can be electrocuted when working on HEVs or EVs. A) O True B) O False

You light a light bulb with a 1.5 volt battery. if the bulb has a resistance of 10 ohms, how much current is flowing?

How are the mass and weight an object related? Include a description with words and a equation.