Jc1 H2 Physics Promo Papers Site

A driver sees a child run across the road. The car is moving at 30 m/s. Reaction time = 0.6 s. Braking deceleration = ( -8 m/s^2 ). Find the total stopping distance. Why students fail: They use ( v^2 = u^2 + 2as ) for the entire journey, forgetting that during reaction time, velocity is constant. Solution: