PLEASE ANSWER THIS QUESTION FAST!! Question - What is the work to be done to increase the velocity of a car from 20km/h to 40km/h if the mass of the car is 2000 kg?
Answers
Answered by
76
Mass of the car (m) = 2000 kg
Initial velocity of the car (u) = 20 km/h
➠ u = 20 × ⁵/₁₈ m/s
➠ u = 5.56 m/s
Final velocity of the car (v) = 40 km/h
➠ v = 40 × ⁵/₁₈ m/s
➠ v = 11.12 m/s
★ Work - Energy theorem :
It states that , work done on a body is equals to the change in kinetic energy .
Work to be done is 92,740.8 J .
9cpurvajawaykole:
✔ thank u for giving the correct anwer
Answered by
76
Answer:
Given :-
- A velocity of car from 20 km/h to 40 km/h if the mass of the car is 2000 kg.
To Find :-
- What is the work done.
Formula Used :-
where,
- m = Mass
- v = Final velocity
- u = Initial velocity
Solution :-
Given :
● Mass (m) = 2000 kg
● Initial velocity (u) = = 5.56 m/s
● Final velocity (v) = = 11.12 m/s
According to the question by using the formula we get,
⇒
⇒
➠
The work to be done is 92740.8 J .
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