1. A man starts to swim across a river which is 40 m wide. He has...

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1. A man starts to swim across a river which is 40 m wide. He has a constant velocity of +8 m/s towards north and the river flows through to the right with +6 m/s. If he starts to swim from the point K as shown, at which distance from the destination L does he land on the other side? V- 6 m/s 40 m 8 m/s к 2. The Velocity-Time graphs of the two cars; K and L are given below together. If the cars start their journey together and they have a position difference of 10 m at time t, what will be the position difference between them at time 4t at the end? Velocity 2V Time 21 3t 41 -V -2V 3. A car is traveling with 20 m/s velocity when its driver sees a child standing on the road. It takes 0.8 s for driver to react, then steps on the brakes and slows at an acceleration of 7 m/s. What is the total distance that the car travels (a soon as the driver see the child) until it stops? 1. A man starts to swim across a river which is 40 m wide. He has a constant velocity of +8 m/s towards north and the river flows through to the right with +6 m/s. If he starts to swim from the point K as shown, at which distance from the destination L does he land on the other side? V- 6 m/s 40 m 8 m/s к 2. The Velocity-Time graphs of the two cars; K and L are given below together. If the cars start their journey together and they have a position difference of 10 m at time t, what will be the position difference between them at time 4t at the end? Velocity 2V Time 21 3t 41 -V -2V 3. A car is traveling with 20 m/s velocity when its driver sees a child standing on the road. It takes 0.8 s for driver to react, then steps on the brakes and slows at an acceleration of 7 m/s. What is the total distance that the car travels (a soon as the driver see the child) until it stops?