Distance travelled with constant velocity or constant acceleration

AI Thread Summary
A cyclist travels at a constant speed of 3 m/s for 20 seconds before decelerating at 0.2 m/s² until stopping at a red traffic light. To find the distance from the bus stop to the traffic light, the distance during constant speed is calculated first, followed by the distance covered during deceleration. The total time taken for the journey includes both the constant speed phase and the deceleration phase. The average speed is determined by dividing the total distance by the total time taken. These calculations provide insights into motion under constant velocity and acceleration.
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Homework Statement


A cyclist is traveling along a straight horizontal road. as she passes a bus stop she sees a red traffic light ahead of her. She continues to travel with a constand speed of 3 ms^-1 for 20 seconds and then decelerates at a constant rate of 0.2ns^-2 until coming to rest at the traffic light


Homework Equations



a) calculate the distance between the bus stop and the traffic light

b) calculate the time the cyclist takes to travel from the bus stop to the traffic light

c) calculate the average speed of the cyclist between the bus stop and the traffic light

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