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Motion In Straight Line

Question

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A satellite is just revolving around the earth. What is the orbital velocity of satellite?

Solution

When a satellite is revolving around the earth, h < < R, then
r = R + h ~ R, and
v = v_o
Putting the value of g = 9.8 m/s²
R = 6.4 x 10⁶ m
We have,

straight v subscript straight o space equals space square root of space 9.8 space straight x space 6.4 space straight x space 10 to the power of 6 end root space space space space space space equals space 7.92 space straight x space 10 cubed space straight m divided by straight s space space space space space equals space 7.92 space km space divided by straight s

Some More Questions From Motion in Straight Line Chapter

Can a train be taken a particle? Give an example in support of your answer.

A particle is moving along curved line in space. Is the motion one dimensional?

State which of the following are examples of one, two or three dimensional motion:

(a) A kite flying in the sky.

(b) The earth revolving around the sun.

(c) A train moving along the equator of the earth in clockwise direction.

(d) Accelerated motion of a particle in a straight line.

Define distance.

Define displacement.

Can magnitude of displacement be greater than distance travelled by particle?

A body is thrown with a velocity of 9.8 m/s in the vertical upward direction. What is the velocity after one second?

How does the displacement of a particle change, when reference point for the position is shifted?

A particle moves from A to B along three different paths. Is the displacement along three paths different?

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