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Long Answer. Answer the following questions, showing all work. At what speed must a 35 kg cheetah move in order to have the same momentum
Long Answer. Answer the following questions, showing all work.
- At what speed must a 35 kg cheetah move in order to have the same momentum as a 25 kg gazelle running at 20 m/s?
- A 1200 kg car accelerates from rest to 25 m/s in 6 seconds.
- What was the car's change in momentum?
- What impulse was delivered to the car?
- What was the net force on the car?
- A 0.15 kg baseball, moving to the left at 35 m/s is hit to the right by a baseball bat. The bat is in contact with the ball for 0.025 s and applies a force of 730 N.
- What was the change in momentum of the ball?
- What is the new speed of the ball?
- James Bond's Aston Martin with combined mass 1250 kg (car and driver) is driving at 55 m/s when Dr. No's evil forces approach him from the rear. To escape, Bond fires his internal rocket engine which provides a force of 2.5 104 N for 2.5 seconds. What is the final velocity of Bond's Car?
- The 80,000 kg space shuttle has an orbital speed of 7500 m/s.
- What impulse is necessary to get the space shuttle to orbital speed from rest?
- If we were to assume a constant force of 7.7 105 Newtons of force on the shuttle during launch, how long does it take to reach orbital speed?
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