Question

A 1500 kg car speeds up from zero to 3.0 ms. it has kinetic energy of 6750 J at top spreed. True or False?

Answer 1

Answer:

True

KE = 1/2 mv^2

m = 1500 kg

v = 3 m/s

KE = 1/2 (1500 kg)(3 m/s)^2

KE = (750 kg)(9 m^2/s^2)

KE = 6,750 J