The instantaneous velocity of a particle of mass 1.50 kg is v⃗=(3î+4ĵ+5k̂) m/s. Find its kinetic energy (J).
Physics · Mixed Chapter
JEE Main Practice

Question

The instantaneous velocity of a particle of mass 1.50 kg is v⃗=(3î+4ĵ+5k̂) m/s. Find its kinetic energy (J).

G1 Physics · Accepted Answer

Step 1: Squared speed v²=3²+4²+5²=9+16+25=50 m²/s². Step 2: K=½mv². Step 3: K=½×1.50×50=37.5 J.