car of mass 1000 kg is brought to rest from a speed of 40 m - in a distance of 80 m. find the braking force of the car assuming that it is constant and that there is a constant resistance to motion of 100 N
Answers
Answered by
0
Answer:
Answer: -10000
Explanation:
Initial velocity = 40
Final velocity = 0
X= u^2/2a
80=1600/2a. therefore a= 10
F= ma 1000×10= -1000O
-ve sign because it's a retarding force ;)
Similar questions