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

step-by-step explanation:

we are given

we have to simplify it

firstly, we will factor it

now, we can cancel like terms

now, we can combine it

so, we get

frequency or wavelenth of em radiation in a vacuum