Honors Physics Mr. Norton 10/3/19 Equations of Motion Practice Problems 1. A skateboarder is moving at a constant speed 1.75m/s when she starts up an incline that causes her to accelerate at -0.20m/s2. How much time passes from when she begins to slow down to when she stops and begins to roll back down? 2. A car starts approaches an on ramp at 5m/s. The on ramp has 100m of space before the car has to merge into traffic going at 30m/s. At what rate does the car have to accelerate to reach the traffic speed before it runs out of space? Honors Physics Mr. Norton 10/3/19 3. A jet ski reaches a speed of 12.3 m/s after accelerating at 2.1m/s2 for 3 seconds. What was its speed before starting to accelerate? 4. A car is driving along the freeway at 65mph when its driver sees a toll booth ahead. The driver puts on the brakes to slow down at a constant acceleration of -4mph/s so it reaches 10 mph as it reaches the toll booth. How far ahead of the toll booth does the driver put on the brakes? For how many seconds does the driver apply the brakes?
