The car starts from rest at s=0 and increases its speed at at=4m/s^2. Determine the time when the magnitude of acceleration becomes 20m/s^. At what point s does this occur

Time =  5 seconds

Distance = 50 meters

Explanation:

Constantly Accelerated Motion

When the velocity of a moving object changes at a constant rate, called acceleration, the velocity changes in same amounts in the same times. The question has a mistake when asking when the acceleration is 20 m/s. If the acceleration is constant, the only variable that can change to that value is the velocity. The equation to calculate the speed is

And the distance s is

Given the object starts from rest, vo=0 and vf=20 m/s at . We compute t

Now we compute s

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answer: decibel

explanation: