<h2>
Its velocity when it crosses the finish line is 119.40 m/s</h2>
Explanation:
We have equation of motion s = ut + 0.5 at²
Initial velocity, u = 0 m/s
Acceleration, a = ?
Time, t = 6.70 s
Displacement, s = 1/4 mi = 0.25 mi = 400 m
Substituting
s = ut + 0.5 at²
400 = 0 x 6.70 + 0.5 x a x 6.70²
a = 17.82 m/s²
Now we have equation of motion v = u + at
Initial velocity, u = 0 m/s
Final velocity, v = ?
Time, t = 6.7 s
Acceleration, a = 17.82 m/s²
Substituting
v = u + at
v = 0 + 17.82 x 6.7
v = 119.40 m/s
Its velocity when it crosses the finish line is 119.40 m/s
This question involves the concepts of the specific heat, mass, and, temperature.
The average Cp value is "".
<h3>SPECIFIC HEAT VALUE</h3>
The specific heat of a gas at constant pressure is given by the following formula:
where,
- Cp = specific heat = ?
- ΔQ = heat required = 522 KJ
- ΔT = change in temperature = 800 K - 300 K = 500 K
- m = mass of gas = 1 kg (taking unit mass)
Therefore,
Learn more about specific heat here:
brainly.com/question/2530523
Answer:
4.6x10^-7 m thickness
Explanation:
See attached handwritten document for more details
The answer is C, since the velocity is not changing then neither is the acceleration
