Time required : 25.876 s
<h3>Further explanation</h3>
Given
A car weight = 25000 N
Brake force = 628 N
vo= 6.5 m/s
vt = 0(stop)
Required
time to stop
Solution
W = m . g
25000 = m.10
m=2500 kg
Newton's second law
F = m . a
628 = 2500 . a
vt=vo-at(deceleration a=-)
0=6.5-0.2512.t
0.2512.t=6.5
t=25.876 s
<h3><u>Answer;</u></h3>
temperature and type of medium
<h3><u>Explanation;</u></h3>
- <em><u>The speed of sound depends on the elasticity and density of the medium through which it is traveling</u></em>. That is sound travels faster in liquids than in gases and faster in solids than in liquids. The greater the elasticity and the lower the density, the faster sound travels in a medium.
- <em><u>The speed of sound also depends on temperature.</u></em> Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.
Newtons approach was creative because he thought of the new idea passing a single color of light through a prism. His approach was also logical. He reasoned that comparing white light and a single color of light would allow him to compare the two
I think there caused by the gravitational pull on the earth from the moon
Answer:
<h2>a) secondary oil recovery.</h2>
Explanation:
Secondary oil recovery is used when the pressure inside the well is to high, being not possible to do a primary oil recovery.
To do this method, high pressure is needed, like this case because it says that ''squirts strongly''.
On the other hand, tertiary oil recovery is used when another method is not possible. Hydraulic fracturing or fracking, it's develop with a horizontal drilling, which is not the case.
