Practice: Acceleration Due to Gravity - Marlins Physics

Practice: Acceleration Due to Gravity 1. What is the weight of a 7.0-kilogram bowling ball on Earth’s surface? ... Based on your answers to questions ...

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Practice: Acceleration Due to Gravity 1. What is the weight of a 7.0-kilogram bowling ball on Earth’s surface? 2. What is the weight of a 7.0-kilogram bowling ball on the surface of the moon where g is 1.62 m/s2? 3. What is the mass of a 7.0-kilogram bowling ball on the surface of the moon 1.62 m/s2? 4. A small child has a wagon with a mass of 10 kilograms. The child pulls on the wagon with a force of 2 N. What is the acceleration of the wagon? 5. Your shopping cart has a mass of 65 kilograms. In order to accelerate the shopping cart down an aisle at 0.3 m/sec2, what force would you need to use or apply to the cart?

6. The force the earth needs to attract a 5000kg elephant is 49,050 N. What is the acceleration due to gravity?

7. The force the earth needs to attract a 0.01kg tennis ball is 0.098 N. What is the acceleration due to gravity? 8. Based on your answers to questions 6-7, deduce the acceleration due to gravity on any free-falling object no matter the mass.

9. If g is the same for all free falling objects, then why is more force required to move the object?

Practice: Acceleration 1. While traveling along a highway a driver slows from 24 m/sec to 15 m/sec in 12 seconds. What is the automobile’s acceleration? 2. A parachute on a racing dragster opens and changes the speed of the car from 85 m/sec to 45 m/sec in a period of 4.5 seconds. What is the acceleration of the dragster? 3. The cheetah, which is the fastest land mammal, can accelerate from 0.0 m/s to 31.0 m/s in 3.0 seconds. What is the acceleration of the cheetah? 4. The sports car can accelerate from 0.0 m/s to 27.5 m/s in 4.0 seconds. What is the acceleration of this car? Give your answer in units of kilometers per hour/sec. 5. Which has greater acceleration, the cheetah or the sports car? 6. If a marble is rolled down a track of 5 m and it took 1.25 seconds. What is the average speed of the roll? 7. A car accelerates from 35 miles per hour to 60 miles per hour in 6 seconds. What is its acceleration? 8. A bike is traveling at 18 mph due east. It turns a wide corner and is traveling 18 mph due north. Has the biker accelerated? Explain. 9. A tennis ball is served in .02 seconds. It reaches a maximum speed of 85 m/s. What is the tennis ball’s rate of acceleration? 10.A racecar accelerates uniformly from 18.5 m/s to 46.1 m/s in 2.47 seconds. Determine the acceleration of the car. 11. The space shuttle releases a space telescope into orbit around the earth. The telescope goes from being stationary to traveling a speed of 1700 m/s in 25 seconds. What is the acceleration of the satellite? 12.A bike accelerates uniformly from rest to a speed of 7.10 m/s in 4.98 seconds. Determine the acceleration of the bike.