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

Answer

We have, 
Initial velocity, u = 9.8 m/s 
Acceleration, a = - 9.8 m/s2
Time taken, t = 1 sec
Final velocity, v = ? 
Using the formula, 
Velocity after 1 sec, 
v = u + at 
   = 9.8 + (-9.8) x 1
   = 0 

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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?