+91-8076753736 [email protected]

-->

Motion In Straight Line

Question

Wired Faculty App

What is the escape velocity from the surface of the earth?

Solution

In the case of Earth,
g = 9.8 m/s²
R = 6.4 x 10⁶ m
And using the formula of escape velocity, we have

straight v subscript straight e space equals space square root of 2 gr end root space So comma space straight v subscript straight e space equals space square root of 2 space straight x 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 equals space 11.2 space straight x space 10 cubed space straight m divided by straight s space space space space space equals 11.2 space km divided by straight s

Some More Questions From Motion in Straight Line Chapter

Can a body be in motion in the frame associated with the body itself?

When an object in motion can be considered as particle or point object?

Can you think of physical phenomena involving the moon in which moon cannot be treated as particle?

A train is crossing the bridge. Can it be taken as a particle?

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?

Mock Test Series

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation