The displacement–time graphs of two moving particles make angles of 30° and 45° with the time axis as shown. The ratio of their respective velocities is:

Question

G1 Physics · Accepted Answer

Step 1: Velocity equals the slope of a displacement–time graph. Step 2: The two slopes are tan30°=1/√3 and tan45°=1. Step 3: Therefore v₁:v₂ = 1/√3 : 1 = 1:√3. Final answer: C.