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Why does the direction of motion of projectile become horizontal at the highest point of its trajectory?

Why does the direction of motion of projectile become horizontal at the highest point of its trajectory?

Grade:12

1 Answers

Agrata Singh
208 Points
5 years ago
The velocity of projectile motion can be broken into two components vx along x axis or horizontal and vy along y axis or vertical. At the highest point vy becomes zero as gravity decelerates the body. However along horizontal direction no force is acting therefore along horizontal body moves with same velocity all the time. Hence when vy becomes zero only vx acts thus giving it a horizontal velocity only.
After that time instant body starts to gain downawar velocity due to gravity again thus completing the second half of projectile motion 
 
Hope this helps you. In case of any further query feel free to ask.

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