Answer:
-2280 N
Step-by-step explanation:
F = ma........................................ Equation 1.
Where F = brake force needed to halt the car, m = mass of the car, a = acceleration of the car.
Also
a = (v-u)/t.............................. Equation 2
Where u = initial velocity of the car, v = final velocity of the car, t = time.
Given: u = 24 m/s, v = 0 m/s ( as the car comes to halt), t = 10 s.
Substitute into equation 2.
a = (0-24)/10
a = -24/10
a = -2.4 m/s²
Also given: m = 950 kg
Substitute into equation 1
F = 950(-2.4)
F = -2280 N
Hence the braking force needed to bring the car to an halt = -2280 N
Note: The force is negative because its act against the motion of the car