Answer:
87.5 mi/hr
Explanation:
Because a = Δv / Δt (a = vf - vi/ Δt), we need to find the acceleration first to know the change in velocity so we can determine the final velocity.
vf = 60 mi/hr
vi = 0 mi/hr
Δt = 8 secs
a = vf - vi/ Δt
= 60 mi/hr - 0 mi/hr/ 8 secs
= 60 mi/hr / 8 secs
= 7.5 mi/hr^2
Now that we know the acceleration of the car is 7. 5 mi/hr^2, we can substitute it in the acceleration formula to find the final velocity when the initial velocity is 50 mi/hr after 5 secs.
vi = 50 mi/ hr
Δt = 5 secs
a = 7.5 mi/ hr^2
a = vf - vi/ Δt
7.5 = vf - 50 mi/hr / 5 secs
37.5 = vf - 50
87.5 mi/ hr = vf
Answer:
Kinetic energy is the energy that an object has because of its motion. The molecules in a substance have a range of kinetic energies because they don't all move at the same speed. As a substance absorbs heat the particles move faster so the average kinetic energy and therefore the temperature increases.
Answer:
The question is incomplete.
A sample question and solution is given below.
Check the attachment for explanation.
Explanation:
Check the attachment below
I would say 3, but I’m not 100% sure
The number of values greater than or equal to 8 is mathematically given as
x = 27
This is further explained below.
<h3>What is a data set?</h3>
Generally, Simply put, data sets are groups of information. When dealing with tabular information, a data set is analogous to one or more database tables, where each column represents a different variable and each row represents a separate record.
In conclusion, the total amount of numbers that are either more than or equal to 8
Data value 8 is only exceeded by 9, 10, 11, and 12.
- 8 occurs 4 times
- 9 occurs 6 times
- 10 occurs 8 times
- 11 occurs 4 times
- 12 occurs 5 times
Hence
x= 4+6+8+4+5
x = 27
Read more about data set
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