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A car starts moving rectilinearly first ...

A car starts moving rectilinearly first with acceleration `alpha=5 m s^(-2)` (the initial velocity is equal to zero), then uniformly, and finally, deceleration at the same rate `alpha` comea to a stop. The time of motion equals `t=25 s`. The average velocity during this time is equal to `
`=72 km h^(-1)` How long does the car move unitromly?

Text Solution

AI Generated Solution

To solve the problem, we will follow these steps: ### Step 1: Convert Average Velocity The average velocity is given as 72 km/h. We need to convert this into meters per second (m/s) for consistency in units. \[ \text{Average Velocity} = 72 \, \text{km/h} = \frac{72 \times 1000}{3600} = 20 \, \text{m/s} \] ...
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