10 grams of salt is the result
True: a scientific fact is something that is absolute and unchanging.
Answer: 450J
Explanation:
Mass of ball = 1.0kg
kinetic energy = ?
velocity of the ball = 30m/s
Kinetic energy is the energy possessed by a moving object. It is measured in joules, and depends on the mass (m) of the object and the velocity (v) by which it moves
i.e K.E = 1/2mv²
KE = 1/2 x 1.0kg x (30m/s)^2
KE = 0.5 x 1.0 x 900
KE = 450J
(Recall that kinetic energy is equal to potential energy at the top of its ascent)
So, if KE = 450J; PE = 450J
Thus, the potential energy of the ball is 450 joules.
Answer:
?
Explanation:
Im confused what do you mean?
Answer:
Explanation:
<h3>a and b</h3>
We can use the following formula, from kinematics:
where is the final speed, is the initial speed, a is the acceleration and d the distance traveled.
Knowing that the final speed is zero, and the initial speed is
we obtain
Now, knowing that
then
<h3>c</h3>
We can use the following formula
so
<h3>d</h3>