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oured vehicle P is 200 m behind another armoured vehicle Q. Both vehicles are travelling in same direction at 144 km-h1, as shown in the diagram below. P 200 m Vehicle Q detonates a landmine, which explodes and stops the vehicle at that point. The driver a vehicle P takes 1,0 s before he/she brakes and the vehicle starts to slow down, which it doe uniformly at 5 mes-2. Take to the right as the positive direction. 4.1 Explain why 5 m-s2 is regarded as negative acceleration. (2) 4.2. Show that 144 km.h*1 = 40 m-s*1. (2 4.3 Calculate the: 4.3.1 Distance (in m) travelled by vehicle P in the 1,0 s reaction time 4.3.2 Time from the instant the brakes are applied until vehicle P comes to rest
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