Question

The velocity of a projectile at point p 3 i+4 j is the magnitude of velocity at point q is

Answer 1

Answer:

5

Explanation:

Answer 2

Answer:

The magnitude of velocity at point q is is $\mathrm{v}_{\mathrm{q}}=(3 \mathrm{i}-4 \mathrm{j})$

Explanation:

A projectile has constant horizontal below,

If it has no acceleration in horizontal direction.

Here,

At point q,

Considering only vertical motion,

Will have same and opposite speeds.

So,

Vertical velocity at $\mathrm{q}=4 \hat{\mathrm{j}}$

Horizontal velocity at $q=3i$

Hence, $\mathrm{v}_{\mathrm{q}}=(3 \mathrm{i}-4 \mathrm{j})$