Question

Katie and her best friend Liam play tennis every Saturday morning. When Katie serves the ball to Liam, it travels 9.5 meters south in 2.1 seconds. What is the velocity of the tennis ball?

Answer 1

`4.52 \ "m/s"` south

Explanation:

The velocity of an object is found by the equation,

`vecv=(vecd)/t`

• `vecd` is the displacement

• `t` is the time taken

And so, we get,

`vecv=(9.5 \ "m")/(2.1 \ "s")`

`~~4.52 \ "m/s"`

Since the original direction was south, then the ball will fly at a velocity of `4.52 \ "m/s"` heading towards the south direction.