Hello
The kinetic energy K of a moving object is:
where m is the mass and v the velocity of the object.
Using this formula, we can calculate v for this problem:
'Acceleration' means ANY change in speed or direction
of motion.
A). Acceleration. The satellite is in a curved orbit, so
its direction is constantly changing.
B). Acceleration. The person is on a curved track, so
his direction is changing.
C). Acceleration. The car is following a curve, so
its direction is changing.
D). No acceleration. Straight, at constant speed.
No change of speed or direction.
Answer:
57.0 m
Explanation:
Given:
v₀ = 0 m/s
t = 3.41 s
a = 9.8 m/s²
Find: Δx
Δx = v₀ t + ½ at²
Δx = (0 m/s) (3.41 s) + ½ (9.8 m/s²) (3.41 s)²
Δx = 57.0 m
The answer is; 2.
To balance a chemical equation, the moles on one side of the equation has to be the same as that on the other side. This ensures that the law of conservation is observed because matter or energy can't be created or destroyed but can only be transformed from one form to another.
In this equation, putting 2 in front of NaCl ensures that there are 2 moles of Na and CL just as there are 2 moles of Na and CL in the reactants side.
