Answer:
<em>58,800Joules</em>
Explanation:
The energy lost is equal to the workdone by the car as it skids.
Workdone = Force * Distance
Given
Force = 8000N
Get the distance using the equation of motion
v² = u² - 2gS
0² = 12² - 2(9.8)S
-12² = - 2(9.8)S
-144 = -19.6S
S = 144/19.6
S = 7.35m
Calculate the required energy
Workdone = 8000 * 7.35
Workdone = 58,800Joules
<em>Hence the energy lost due to friction is 58,800Joules</em>
Answer:
The answer is 5 seconds;
Explanation:
<h3>a) We know that the speed(V) is 15 m/s and acc. (a) is 3 m/s^2 </h3><h3>b) The formula for the acceleration is a=
;</h3><h3>
Using this formula we can define the next equation:</h3><h3>
3 = 
, where t is the sought time. After solving the equation we get that t is 5; </h3><h3>
</h3><h3>
</h3><h3>
</h3>
Answer:
the answer is A have a nice day hope I helped
