A car undergoes acceleration according to the given function. If the threshold for serious injury or fatality for a human undergoing horizontal acceleration is 60 g ees (1 gee = 10 meters per second per second), how long would a human be able to withstand riding in this car?

A ball travels with a velocity as described by the function below:

What is the ball's acceleration?

A car undergoes acceleration according to the given function. How fast is the car moving after four seconds?

A car undergoes acceleration according to the given function. What distance has the car traveled after three seconds?