Answer:
Explanation:
The kinetic energy of an object is given by where is the mass of the object and is the velocity of the object.
We can set up the following equations with the information given:
For part B, we have the same equation, but kinetic energy is now .
Therefore:
.
Answer:
Kinetic and potential energy cause most movement in the world, sorry if this doesn't help, there wasn't a lot of info on the question.
The initial velocity of the sky diver would be t=0. So put that into the equation:
<span>v(0)=64(1−<span>e<span>(−0.19)(0)</span></span>)
and for b it will be
</span><span>(5)=64(1−<span>e<span>(−0.19)(5)</span></span>)</span><span>, and likewise for t=15. You just need to throw it in a calculator.</span>
Answer:
a) v = 45.37 m/s and b) T = 14.4 N
Explanation:
Let's use Newton's second law with centripetal acceleration
F = ma
Let's set a reference system where the x-axis is horizontal and the y-axis is vertical, in that system the only force to decompose is tension, let's use trigonometry
sin 35 = Tₓ / T
cos 35 = / T
Tₓ = T sin35
= T cos 35
Y Axis
-W = 0
T cos 35 = W
T = mg / cos 35
X axis
Tₓ = ma
a = v² / r
T sin 35 = m v² / r
(mg / cos 35) sin 35 = m v² / r
g tan 35 = v² / r
v = √ g r tan 35
v = √ (9.8 300 tan 35)
v = 45.37 m / s
b) the tension of the rope is
T = mg / cos 35
T = 1.20 9.8 / cos 35
T = 14.4 N
can you make what your saying clear? like what do you mean by taking sponge?