posted by Lele Reynolds .
A car weighing 24,500 Newtons is traveling east and travels a distance of 100 meters in 20 seconds. What is the car's mass? What is the car's kinetic energy?
m*g = 24,500 N.
m = 24500/g = 24500/9.8 = 2500 kg
Ek=0.5m*V^2 = 1250*(100/20)^2=31,250 J.