a track and field athlete is running forward with a javelin at a velocity of 4.2 m/s. If he throws the javelin at a velocity relative to him of 10.3 m/s,then what is the velocity of the javelin relative to the ground?

please help quick!!
thanks :)

10.3 + 4.2 = ___ m/s

Do the addition.

Well, well, well, it seems like we have a speedy athlete and a speedy javelin on our hands! Let's break it down, shall we?

The athlete is running forward at a velocity of 4.2 m/s. When he throws the javelin, the velocity of the javelin relative to him is 10.3 m/s.

Now, to find the velocity of the javelin relative to the ground, we need to add the velocities of the athlete and the javelin together.

So, let's do some math magic! Adding 4.2 m/s (athlete's velocity) to 10.3 m/s (javelin's velocity relative to the athlete), we get:

4.2 m/s + 10.3 m/s = 14.5 m/s

Voilà! The velocity of the javelin relative to the ground is 14.5 m/s.

I hope that helps, and remember, don't throw any jokes too fast or they might go over someone's head!

To find the velocity of the javelin relative to the ground, we need to consider the velocity of the athlete and the velocity of the javelin relative to the athlete.

The velocity of the athlete is given as 4.2 m/s, and the velocity of the javelin relative to the athlete is given as 10.3 m/s. Since the athlete is running forward, we assume the direction of his velocity is positive.

To find the velocity of the javelin relative to the ground, we can add the velocities of the athlete and the javelin relative to the athlete.

Velocity of javelin relative to ground = Velocity of athlete + Velocity of javelin relative to athlete

Velocity of javelin relative to ground = 4.2 m/s + 10.3 m/s
Velocity of javelin relative to ground = 14.5 m/s

Therefore, the velocity of the javelin relative to the ground is 14.5 m/s.

To solve this problem, we can use the concept of relative velocities.

Let's assume that the athlete's velocity relative to the ground is v1, and the velocity of the javelin relative to the athlete is v2. We can then find the velocity of the javelin relative to the ground using the following equation:

Velocity of javelin relative to ground = Velocity of athlete relative to ground + Velocity of javelin relative to athlete

Given:
Velocity of athlete relative to ground (v1) = 4.2 m/s
Velocity of javelin relative to athlete (v2) = 10.3 m/s

Plugging in the values, we have:

Velocity of javelin relative to ground = 4.2 m/s + 10.3 m/s
Velocity of javelin relative to ground = 14.5 m/s

Therefore, the velocity of the javelin relative to the ground is 14.5 m/s.