Answer:
3.07 m/s
Explanation:
We know that from kinematics equation
and here, a=g where v is the final velocity, u is the initial velocity, a is acceleration, s is the distance moved, g is acceleration due to gravity
Making u the subject then
Substituting v for 6.79 m/s, s for 1.87 m and g as 9.81 m/s2 then
When stopped, the velocity of the van is 0 m/s.
We can use the formula <em> = +</em> <em>at</em>, where <em>a </em>is acceleration.
0 m/s = 11.5 m/s + (3.5 s)<em>a</em>
<em>-</em>11.5 = 3.5a
<em>a ≈ </em>-3.28571429 m/s^2
Round it however you need.
The potential energy (P.E) of the rock relative to the base of the cliff is 31,054.926 Joules..
<u>Given the following data:</u>
- Acceleration due to gravity = 9.8
To calculate the potential energy (P.E) of the rock relative to the base of the cliff:
<h3>What is potential energy?</h3>
Potential energy (P.E) can be defined as the energy that is possessed by an object due to its position (height) above planet Earth.
Mathematically, potential energy (P.E) is given by this formula;
<u>Where:</u>
- P.E is the potential energy.
- m is the mass of an object.
- g is the acceleration due to gravity.
- h is the height of an object.
Substituting the given parameters into the formula, we have;
P.E = 31,054.926 Joules.
Read more on potential energy here: brainly.com/question/8664733
The kind of vegetation that alfisols support is a temperate forest. Alfisols develop under the temperate broadleaf deciduous forests. Broadleaf trees tend to be nutrient demanding, and their leaves are filled with major nutrient elements. The litter from this type of forest is not the acidic type, either.