Question

If v=3i+4j+5k is the instantanious velocity of a body of mass 1.50 kg . Calculate its kinetic energy

Answer 1

|v| = √(3)² + (4)² + (5)² = √50 m/s

m = 1.50 kg

Therefore, K.E = 0.5*m*v²

= 0.5*1.50*50 = 37.5 J

Hope it works!