A runner of mass 55.7kg starts from rest and accelerates with a constant acceleration of 1.1 m/s2. Until she reaches a velocity of 5.1 m/s. She then continues running at this constant velocity. How long in seconds does the runner take to travel 118m.

A boy jumps from rest, straight down from the top of a cliff. He falls halfway down to the water below in 0.697 s. How much time passes during his entire trip from the top down to the water? Ignore air resistance.

The driver of a car traveling down the interstate slams on the brakes, causing the car to skid to rest over a distance of 152.4 m. If the car experienced an acceleration of -15.34 m/s2 during this time, how long did it take for the car to come to rest?

A car starts from rest at t = 0 s, and speeds up with a constant acceleration of 1.81 m/s2 for 6.00 s. Then it continues with a uniform speed for another 6.00 s. Finally, it speeds up with a constant acceleration of 2.02 m/s2 until it reaches a speed of 18.0 m/s. (a) Draw the velocity vs. time and acceleration vs. time graphs for this motion. Numerical values on the graphs are not required. (b) How long does it take for the car to reach a speed of 18.0 m/s? Time is measured from the beginning at t = 0 s (c) What is the total displacement of the car?