calculate the period of a satellite orbiting the moon calculate the period of a

Question

calculate the period of a satellite orbiting the moon calculate the period of a satellite orbiting the moon calculate the period of a satellite orbiting the moon 12 Points] 1. When an object moves in uniform circular motion, the direction of its acceleration is A) in the same direction as its velocity vector. B) in the opposite direction of its velocity vector C) is directed toward the center of its circular path. D) is directed away from the center of its circular path. E) depends on the speed of the object. 2. A satellite encircles Mars at a distance above its suface equal to 3 times the radius of Mars. If gm is the acceleration due to gravity at the surface of Mars, what is the acceleration due to gravity at the location of the satellite? A) gm/9 B) 0 C) &m; D) gm/3 E) gm/16 2 Points] 3. If the force on an object is in the negative direction, the work it does on the object must be [2 Points A) negative. B) positive C) The work could be either positive or negative, depending on the direction the object moves 4. Which of the following quantities are units of momentum? (There could be more than one correct choice.) A)N m B) kg s/m C) kg m/'s D)N-s 12 Points] E) kg m2/s2 2 Points] 5. The momentum of an isolated system is conserved A) only in inelastic collisions. B) only in elastic collisions. C) in both elastic and inelastic collisions. 6. A highway curve of radius 100 m, banked at an angle of 45°, may be negotiated without friction at a speed of A) 22 m/s. B) 31 m/s C) 44 m/s D) 67 m/s. IS Points)

Explanation / Answer

Solution:

1.) Ans: C- is directed toward the center of its circular path

Reason: Usng definition of Centripetal force.

2.) Ans: E - gm/16

Reason: M=mass of Mars
R=radius of Mars
G=gravitational constant
R'=radius of stellite orbit
on have:
g=MG/R2
g'=MG/R'2
g'/g=(R/R')2
R'=4R
then
g'/g=(1/4)2=1/16
g'=(1/16)g.

3.) Ans: C - the work could be either positive or negative depending on the direction the object moves.

Readon: W = r . F , there fore r vector is alose needed for work.

4.) Ans: C, D kg-m/s or N-s

Reason : By definition of momentum p = mv

5.) Ans: C in both elastic and inelastic collisions.

Reason: Definition of conservastion of momentum.

As per chegg guidelines only 4 sub-parts per quetion, please post the othe question separately.

I hope you understood the problem, If yes rate me!! or else comment for a better solution.

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