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Motion In Straight Line

Question

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A body of mass 80kg weighs 400N at surface of certain planet. What is the gravitational field strength at the surface of the planet?

Solution

Given,
Weight of the body, m = 400 N
Mass of the body = 80 kg
The gravitational field strength at the surface of planet is,

straight E equals straight F over straight m equals 400 over 80 equals 5 straight N divided by kg

Some More Questions From Motion in Straight Line Chapter

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?

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