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# Tag Archives: resolution

## Projectile Motion

Ramesh Asks:

“A body is projected with velocity u with an angle with the horizontal. What is its average velocity when it crosses half of its max height”

## Vector resolution and addition

Zeenath Asks:

Sir please send me the answers with the reasons and steps

- the drawing on the left shows two vectors
**A**and**B**, and the drawing on the right shows their components.

The scalar components of these vectors are:

When the vectors**A**and**B**are added, the resultant vector is**R**, so that**R**=**A**+**B**. What are the*x*– and*y*-components of**R**? - the displacement vectors
**A**and**B**, when added together, give the resultant vector**R**, so that**R**=**A**+**B**. Use the data in the drawing to find the magnitude*R*of the resultant vector and the angle*q**+x*axis.

**Answer**

In the first question as you can see that the X components (Ax and Bx being equal and opposite will cancel each other and therefore the X com ponent of the resultant is zero.

The Y components will add up and therefore the Y component of resultant = 3.4+3.4 = 6.8 m and this itself is the magnitude of the resultant as the X components have canceled out.

Hnit for Answer to the second question