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

Step-by-step 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.