Answer:
44J
Explanation:
Given parameters:
Mass of rock = 0.22kg
Initial velocity = 20m/s
Distance moved = 10m
Unknown:
Initial kinetic energy of the rock = ?
Solution:
To solve this problem, we need to understand that kinetic energy is the energy due to the motion of a body.
It is mathematically expressed as;
Kinetic energy =
m v²
m is the mass
v is the velocity
Kinetic energy =
x 0.22 x 20² = 44J
On September 2, 2013, the temperature record at El Azizia, Libya (58° C) was disqualified. Therefore, the highest temperature recorded on the surface of the earth was recorded in 1913 at Death Valley, California. The mercury climbed to 56.7° C.
Do both cars leave the starting line at the same time ? That's kind of important. I'll assume that they both start out at the same time, and now I'll proceed to answer the question that I have invented.
-- Car B moves 4 m/s faster than Car A .
-- So Car-A's lead shrinks by 4 meters every second after they start.
-- It takes (10/4) = 2.5 seconds for Car-A's lead to shrink to zero.
-- So Car-B overtakes Car-A <em>2.5 seconds</em> after they start.
Answer:
Explanation:
Because you have no values on this graph, the only thing one can possibly state about this graph is that the object is experiencing a negative acceleration.