**An SUV is traveling at a speed of 18 mIs. If the SUV has a mass of 1,550 kg, what force must be applied to stop it in 8 seconds?**

O A. —3,487.5 N O B. —4,030.7 N O C.—2.25N O D. —2,7000 N

Answer:

The correct answer for An SUV is traveling at a speed of 18 mIs. If the SUV has a mass of 1,550 kg, what force must be applied to stop it in 8 seconds?

An SUV is traveling at a speed of 18 mIs. [ If the SUV has a mass of 1,550 kg, —3,487.5 N must be applied to stop it in 8 seconds. Solution: Vi = 18 m/s , Vf = 0 m.s , m = 1,550 kg , t = 8 sec By equation of motion , we get Vf = Vi + at 0 = 18 + a(8) -18 = 8a 8 a = =18 a = -18/8 A = – 9/4 Now F = ma F = (1550)( – 9/4) F = – 3,487.5 N ]