The velocity of a projectile at the initial point A is (2i + 3j) m s⁻¹. When it reaches point B at the same vertical level as A, its velocity is:
Options

Question

The velocity of a projectile at the initial point A is (2i + 3j) m s⁻¹. When it reaches point B at the same vertical level as A, its velocity is:

G1 Physics · Accepted Answer

Step 1: In projectile motion without air resistance, the horizontal component remains constant. Step 2: On returning to the same vertical level, the vertical component has the same magnitude but opposite sign. Step 3: Thus velocity becomes 2i-3j m s⁻¹. Final answer: C.