1) A car moves 1000m N in 500s with no acceleration. Stops at a red light...

 

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1) A car moves 1000m N in 500s with no acceleration. Stops at a red light for 50s and then continues to move N with the same constant velocity as before in the N direction for 450s more. Calculate a. The average speed during the first 500s b. How far the car travels in 450s C. The total displacement of the journey d. The average speed for the WHOLE journey e. Draw a sketch graph of d-t and v-t 2) A velocity time graph of a person walking is shown below: velocity (m/s) 02 4 9 8 10 12 time (s) 14 14 16 When is the velocity 0 m/s? 5 m/s? 2 m/s? When is the person accelerating? f What is the value of the acceleration? Using either the formulas, or the graph, how far does the person move in the first 5s? 1) A car moves 1000m N in 500s with no acceleration. Stops at a red light for 50s and then continues to move N with the same constant velocity as before in the N direction for 450s more. Calculate a. The average speed during the first 500s b. How far the car travels in 450s C. The total displacement of the journey d. The average speed for the WHOLE journey e. Draw a sketch graph of d-t and v-t 2) A velocity time graph of a person walking is shown below: velocity (m/s) 02 4 9 8 10 12 time (s) 14 14 16 When is the velocity 0 m/s? 5 m/s? 2 m/s? When is the person accelerating? f What is the value of the acceleration? Using either the formulas, or the graph, how far does the person move in the first 5s?