6. One of the design issues in rockets such as the one described in problem 5 is

Question

6. One of the design issues in rockets such as the one described in problem 5 is that unless the rocket is built extremely well the fins just stay on the launch pad while the rocket takes off without them; kind of like the tablecloth trick! If a fin has a mass of 27 grams, what is the weight of that fin during launch? Use your answer to problem 5.

7. In lab, you fire a projectile launcher from a height of 1.07 m, with an initial speed of 4.9 m/s and a launch angle of 35? above horizontal. At what distance does the projectile strike the floor?

Explanation / Answer

part 7)

in this case range(horizontal diatnce of projectile) is

x=(vcosa/g)(vsina+(v2sina2+2gy0)

where yo is teh height of building

v is the initial velocity

a is the angle of velocity

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