Physics, 31.07.2020 19:01, michealjholley6211
You have been hired to design a spring-launched roller coaster that will carry two passengers per car. The car goes up a 10-m-high hill, then descends 15 m to the track's lowest point. You've determined that the spring can be compressed a maximum of 2.2 m and that a loaded car will have a maximum mass of 450 kg . For safety reasons, the spring constant should be 15 % larger than the minimum needed for the car to just make it over the top.
a) what spring constant (k) should you specify ?
b) What is the maximum speed of a 400 kg car if the spring iscompressed the full amount.
Answers: 2
Physics, 21.06.2019 22:30, tladitidimatso1783
A2 kg ball travellng to the right with a speed of 4 m/s collidees with a 5 kg ball traveling to the left with a speed of 3 m/s. take right to be the positive direction. what is the total momentum of the two balls before they collide? what is the total momentum of the two balls after they collide?
Answers: 1
Physics, 22.06.2019 16:40, dylan6981
The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .
Answers: 3
You have been hired to design a spring-launched roller coaster that will carry two passengers per ca...
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