JEE Main Physics question
At a certain instant, a body of mass 0.4 kg has a velocity of (8î+6ĵ) ms⁻¹. The kinetic energy of the body is
Answer: (C)
Solution
|v|² = 8²+6² = 100. KE = ½(0.4)(100) = 20 J.
At a certain instant, a body of mass 0.4 kg has a velocity of (8î+6ĵ) ms⁻¹. The kinetic energy of the body is
|v|² = 8²+6² = 100. KE = ½(0.4)(100) = 20 J.