3. Sketch the graph shape of a displacement as a function of time graph and a velocity as a function of time graph for an object moving uniformly. d V t t 4. Two objects are in motion as shown below. Identify the object that is slowing down as indicated by its velocity (v) and acceleration (a) vectors. a i. ii. 5. A race car travelling north accelerates uniformly from 40.0 m/s to 85.0 m/s over a 3.0 s time period. Calculate the car's acceleration. [15 m/s, north] 6. A ball is dropped from a bridge and takes 4.0 s to reach the water directly below. Calculate the elevation of the bridge above the water in metres (neglect air resistance). [78 m] 7. A ball is travelling at 9.0 m/s to the north when it collides with a window. Determine the ball's change in velocity if it a. breaks the window and continues to travel to the north at 4.0 m/s. [5.0 m/s, south] b. bounces off the window and travels south at 4.0 m/s. [13.0 m/s, south]