A force of 1510 N is needed to bring a car moving at 22.0 m/s to a halt in 25.0 s. What is the mass of the car?

The car undergoes an acceleration a of

a = (0 - 22.0 m/s) / (25.0 s) = -0.880 m/s²

The force acts in a direction opposite the car's motion, so the car has mass m such that

-1510 N = m (-0.880 m/s²)

m = (1510 N) / (0.880 m/s²) ≈ 1715.91 kg ≈ 1720 kg

answer: point c: b. 1/2 potential, 1/2 kinetic, point a: 3/4 of its potential energy, point d or b: 3/4 potential, 1/4 kinetic

explanation: i cant explain. it's difficult to explain.