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How fast is the football traveling when it reaches Lilah?
Felipe is riding his skateboard toward Lilah at 15 km/h.
He throws a football to Lilah. The football is thrown at 8
km/h.
O 7 km/h
8 km/h
15 km/h
23 km/h

Respuesta :

skyluke89

Answer:

23 km/h

Explanation:

Let's take the direction "towards Lilah" as positive direction.

Then, we can write Felipe's velocity with respect to Lilah as

[tex]v_f = +15 km/h[/tex]

At the same time, Felipe throws the football forwards, towards Lilah. The velocity of the ball with respect to Felipe (and the skateboard) is

[tex]v_b = +8 km/h[/tex]

Since both Felipe and the ball are moving in the same direction, then the velocity of the ball with respect to Lilah can be calculated by adding the two velocities:

[tex]v' = v_f + v_b = 15 + 8 =23 km/h[/tex]

colvinj04

Answer:

its D

Explanation:

EDG2020

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