3. If a car moving at +2.0 m/s accelerates at a rate of +4.0 m/s 2 for 2.5 second, what is its final velocity?

4. What is the displacement of a train as it is accelerated from +9 m/s to +39 m/s in a 21 second time interval?

5. A jet fighter plane takes off from a runway with an acceleration of +25m/s 2. If it takes the plane 7.68 seconds to leave the ground what is the minimum length the runway must have for the plane to take off successfully? If the runway were 100m long, and if the take off velocity must be 192 m/s, what acceleration would the plane need to to take off?

6. A student is running toward his girl friend, who is +75m away, with a velocity of +1.25m/s. Desperate to make out, the student accelerates at +0.35 m/s 2 until their lips meet. What velocity does the student have when their lips meet? If the student wanted to come to rest just as he arrived at his girl friend, what would his acceleration need to be?