1. Chris is driving a racecar at a velocity of 130 m/s [E]. He slams on the brakes and comes to a stop. If the car stops over a period of 8 s, determine the acceleration of the car over this time.

2. Jessica flies a helicopter with a velocity of 120 km/h [N] while a strong wind is blowing with a velocity of 50 km/h [W]. What is the relative velocity of the helicopter to a stationary observer on the ground?

3. Distinguish between a scientific hypothesis and a scientific theory.

4. List the four steps of the scientific method, and briefly describe each.

5. An object is said to be accelerating under what 3 conditions?

6. Paula climbs the Eiffel tower, and then proceeds to drop a baguette from the top so that she can measure the height of the tower. If the free falling baguette takes 7.3 s to reach the ground, how tall is the tower? What is the velocity of the baguette as it strikes the ground?

7. Lenora decides to drive toOrilliato attend theMariposaFestival after an exciting physics class. She drives 50 km North, then decides shedoesn'twant to attend the festival after all, so she quickly turns around and drives 70 km South back home. The entire trip takes her 1.5 hours. Calculate both her average speed and average velocity for the trip.

8. A squirrel is trying to find its stash of acorns after the winter. The squirrel travels from its nest 26 m at an angle of 40 West of South. What are thexandycomponents of the squirrel's motion?

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Answer Lets tackle these step by step Acceleration of the racecar To find acceleration you can use the formulaavtatvwhere vv is the change in velocity ... View the full answer