Answer:
To find the time it takes for a car to stop from a velocity of 35 m/s using a braking force of 4000 N, we can use the following formula:
vf = vi + at
where
vf = final velocity (0 m/s in this case, since the car is stopping)
vi = initial velocity (35 m/s)
a = acceleration, which can be calculated as a = F/m, where F is the braking force (4000 N) and m is the mass of the car (2000 kg)
t = time
Rearranging the formula:
t = (vf - vi)/a = (0 - 35) / (4000 / 2000) = (35) / (2) = 17.5 s
Answer:
It takes the car 17.5 seconds to stop from a velocity of 35 m/s with a braking force of 4000 N.