☰
✕

Motion in Straight Line
Question
Wired Faculty App

A body is thrown up with velocity 39.2m/sec. What is the direction of velocity and acceleration at t = 0, t = 3, t = 4, t = 6?

Answer

Given, a body is thrown up with velocity = 39.2 m/s.
Acceleration due to gravity is acting vertically in a downward direction.  
Acceleration, g = 9.8 m/s2

The body thrown in upward direction with velocity 39.2 m/s will take 4s to reach the maximum height. 

At t = 0 and t = 3, the velocity is in upward direction.
At t = 4 sec velocity is zero and at t = 6 sec, velocity will be in downward direction. 

Sponsor Area

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?