Question

What is the kinetic energy of a 2,000-kg car moving at 20 m/s?

O A. 4,000 J
O B. 40,000 J
O C. 400,000 J
O D. 20,000 J

Answer 1

K.E = 1/2 mv^2

KE = 1/2 ×2000×20^2 = 1000×400 =400000

option c correct