Question

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Answer 1

3) 4m/s means car speed is 4 metre per second

4)the car maximum speed is 12 metre in a second

5)for 6 seconds

6) on 15

7) there is 3 metre per second speed change in first 3 second

8) there is no acceleration

9) after 10 seconds

10) there is 2 metre per second retardation in last 4 second