Question

Two balls are kicked with the same initial speeds. Ball A was kicked at the angle 20° above horizontal and ball B was kicked at the angle 75° above horizontal. What ball will have bigger speed at the highest point of their trajectory? (section 4.3) Ball A Ball B Impossible to answer without knowing their actual initial speeds. They will have the same speeds

Answer 1

Answer:Impossible to answer without knowing their actual initial speeds

Explanation:

Given

Ball A launched at angle of $20^{\circ}$

Ball B is launched at angle of $75^{\circ}$

At the highest  point Ball vertical velocity will be and there will be only horizontal velocity i.e. $v_acos20$ and $v_bcos75$

where $v_a and v_b$ is the velocity of A & B

thus to find which one is greater we need to know their initial velocity.

It is impossible to know which one have higher velocity at highest point.