1)   A jalopy travels on a long straight level road at 50 km/hr and then speeds up to 90 km/hr in 15 seconds. Calculate the jalopy's acceleration in m/s/s.

 2) A car increases its velocity from 15 m/s to 25 m/s in the distance of 20 m.

          a) F ind the magnitude of this  acceleration

          b) F ind  the time  it  takes for the car to  travel this distance

 3) A kangaroo is capable of jumping to a height of 2.62 m. Determine the takeoff speed of the kangaroo.

 4) A bullet leaves a rifle with a muzzle velocity of 521 m/s. While accelerating through the barrel of the rifle, the bullet moves a distance of 0.840 m. Determine the acceleration of the bullet (assume a uniform acceleration)

 5)   In a classic “Seinfeld” episode, Jerry races one of his old high school friends. Upon hearing a car backfire, Jerry leaves 0.5 seconds before the other guy. Jerry's maximum acceleration is 2.00 m/s/s. His friend's is 2 .20 m/s/s .

                 a) How long will it take the friend to overtake Jerry?

                 b) How far from the start are they when they are even?

                 c) What are their respective velocities when they are even?

Additional Solutions in Italian