KE=1/2mv^2
KE=1/2 x 5kg x (10m/s)^2
KE= 2.5kg x 100m^2/s^2
KE= 250 J
Answer:
A
I think I've read this passage before
Answer: 13.46 m/s
Explanation:
Initial velocity V1 = 5.82 m/s
acceleration A = 2.35m/s^2
Time taken T = 3.25s
Final velocity V2 = ?
Recall that acceleration is the rate of change of velocity per unit time i.e acceleration = (V2 - V1)/T
2.35m/s^2 = (V2 - 5.82 m/s) / 3.25s
cross multiply
2.35m/s^2 x 3.25s = (V2 - 5.82 m/s)
7.6375m/s = V2 - 5.82 m/s
V2 = 7.6375m/s + 5.82m/s
V2 = 13.46 m/s
Thus, the car final velocity is 13.46 m/s
"The rider uses energy to do work going up the mountain. This energy is converted to potential energy and then changes into kinetic energy on the way down" is the way he could <span>use the law of conservation of energy to describe his trip down the mountain. The correct option is the first option.</span>
Answer:
A material that contains three elements joined in a fixed proportion will be a <u><em>compound.</em></u>
Explanation:
An element can be described as a substance that is made of only one kind of atom.
<em>On the other hand, a compound can be described as a substance that is made up of more than one atom or elements. A compound can contain fixed proportions of each element that it is made of or it can even contain different proportions of each element. </em>
For example, carbon dioxide is a compound which will always contain 12 grams of carbon for every 32 grams of oxygen.