Assuming both billiard balls have the same mass, conservation of momentum says
where m = mass of both billiard balls, and v₁ and v₂ = their initial velocities, and v₁' and v₂' = their final velocities. The masses are the same so the exact value of m is irrelevant. The first ball has initial speed 5 m/s and the second is at rest, so
After the collision, the first ball has speed 4.35 m/s and is moving at angle of 30° below the original path, so
Then the second ball has final velocity vector
so it moves with speed
at an angle of
or about 60.5° above the original line of motion.
Explanation:
There's a massive amount, just think of anything everyday. Like a table on the floor, or when your walking around and putting pressure on the floor. When you squeeze something which is solid. Anything like that will do.
I think answer is A. The Brightness of a Star
Answer:
<em>Timing Belts </em>are components of internal combustion engines sinchronizing the handles and cranks rotation with the camshaft when operating its valves.
Internal combustion systems such as the ones found in cars for example, need a method to get the heat away from the system; the mechanical device set for that purpose is the <em>water pump</em>, which pushes coolant over the radiator, the hoses and engine block; that <em>water pump </em>is generally joint with the crankshaft pulley through those <em>timing belts</em>. Thereyby (A.)
Explanation:
The watts determine the brightness. Watt is the unit of Power. And Power is equal to Voltage x Amps (current). So both the current and voltage determine the brightness.