Question

PLEASE HELP!!

A player punts a football at an angle of 30 degrees. The football has an initial
velocity of 20.0 m/s. Find the y-component of the ball's velocity.
17.3 m/s
O 10.0 m/s
O 30.0 m/s
0 25.1 m/s

Answer 1

The y-component of the ball's velocity is 10 m/s

The second choice 10.0 m/s is correct

Step-by-step explanation:

Projectile Motion

It's the type of motion that experiences an object that is projected near the Earth's surface and moves along a curved path exclusively under the action of gravity.

Being vo the magnitude of the initial velocity and θ the angle it makes with the horizontal, the components of the initial velocity are calculated as follows:

`v_(ox)=v_o.\cos\theta`

`v_(oy)=v_o.\sin\theta`

Since the football is kicked at vo=20 m/s and an angle of θ=30°:

`v_(oy)=20.\sin 30^\circ`

`v_(oy)=20*0.5=10`

The y-component of the ball's velocity is 10 m/s

The second choice 10.0 m/s is correct