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4.3 Newton’s 2nd Law of MotionSolve each problem.1. Captain John Stapp of the U.S. Air Force tested the human limits of acceleration by riding on a rocket sled of his own design, known as the Gee Whiz. What net force would be required to accelerate the 82-kg Stapp at 450 m/s2 (the highest acceleration tested by Stapp)?2. Sophia, whose mass is 52 kg, experienced a net force of 1800 N at the bottom of a roller coaster loop during her school's physics field trip to the local amusement park. Determine Sophia's acceleration at this location.3. Engineers at the Johnson Space Center must determine the net force needed for a rocket to achieve an acceleration of 70 m/s2. If the mass of the rocket is 45,000 kg, how much net force must the rocket develop?4. What is the mass of a truck if it produces a force of 14,000 N while accelerating at a rate of 5 m/s2 ?5. A buoyant force of 790 N lifts a 214 kg sinking boat. What’s the boat’s net acceleration?6. Moe, Larry, and Curly push on a 752 kg boat that floats next to a dock. They each exert an 80.5 N force parallel to the dock. (a) What is the acceleration of the boat if they all push in the same direction? (b) What is the magnitude and direction of the boat's acceleration if Larry and Curly push in the opposite direction to Moe's push?7. A house is lifted by a net force of 2850 N and moves from rest to an upward speed of 15 cm/s in 5.0 s. What is the mass of the house?8. An 8.0 kg bag is lifted 20.0 cm in 0.50 s. If it is initially at rest, what is the net force on the bag? ................
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