MZAXH A satellite orbits the Earth in an orbit 548_km high. Find (*) the satelli

Question

MZAXH A satellite orbits the Earth in an orbit 548_km high. Find (*) the satellite's orbital speed and (*") period. (The mass and radius of the Earth are 5.98E+24 kg and 6370000 m, respectively.) 7. orbital speed a. 7695 m/s b. 7593 m/s c. 9677 m/s d. 14600 m/s e. 9132 m/s f. 13040_m/s 8. orbital period a. 1.815 h b. 1.618 h c. 1.411 h d. 1.59 h e. 2.994 h f. 2.514h KTNDS 7-g golf ball is at rest on a tee. A golfer swings his club and hits the ball so that the club applies an average force of 300 N for 4.2 ms. How fast does the ball move coming off the tee? 9. a. 55.34 m/s b 34.05,m/s c. 32.79 m/s d. 30.05 m/s f. 62.15.m/s IZIXM

Explanation / Answer

7.

Radius

R=548+6370 =6918 km

orbital speed is given by

V=sqrt(GM/R)=sqrt(6.67*10-11*5.98*1024/6918*103)

V=7593 m/s

8.

Orbital period is given by

T=2piR/V =2pi*6918*103/7593

T=5725 s

in hours

T=5725/3600 =1.59 hours

9.

Average force

Favg =m(dV/dt)

300=0.037*dV/(4.2*10-3)

dV=34.05 m/s

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