Explanation:
The speed of the red car, relative to the blue car, is:
v = 75 m/s − 50 m/s
v = 25 m/s
Answer:
Explanation:
Given:
- mass of car,
- distance of skidding after the application of brakes,
- coefficient of kinetic friction,
<u>So, the energy dissipated during the skidding of car:</u>
<em>Frictional force:</em>
where N = normal reaction by ground on the car
<em>Now from the work-energy equivalence:</em>
is the dissipated energy.
Please find attached photograph for your answer. Please do comment whether it is useful or not
The answer to question one is A.
The answer to question two is A.
The answer to question three is D.
Using the constant acceleration formula v^2 = u^2 + 2as, we can figure out that it would take a distance of 193.21m to reach 27.8m/s