Answer:

The trolley moves because a force of exertion is pushed onto it when the boy launches himself onto it. It also moves in a direction, so velocity is applied to it.

The velocity goes from stand-still to something. Also, to find velocity, I think acceleration and time are 2 constants that are needed to find velocity, which is not present in the question.

Sorry if this is not the answer you wanted.. I just gave a basic guess as to what I think the answer is. I just started to learn physics.

Explanation:

**Answer:**

2.5m/s

**Explanation:**

Kinetic energy = 1/2 mv²

Mass = m= 8000kg

Velocity(speed) = v =

K. E = 24000J

K. E = 1/2 x 8000 x v²

24000 = 4000 x v²

Divide both sides by 4000

V²= 24000/4000

V² = 6

Find square root of both sides

V = √6

V = 2.5 m/s

The S. I unit of energy is joules with symbol J

I hope this was helpful, Please mark as brainliest

**Answer:**

Distance magnitude = 24 meters

The direction of the displacement = Eastward

**Explanation:**

The distance walked by the football coach eastward = 24 meters

The distance walked by the football coach westward = 12 meters

Then the distance walked by the football coach eastward = 36 meters

Finally, the distance walked by the football coach westward = 22 meters

The total distance walked by the coach eastward = 24 + 36 = 60 meters

The total distance walked by the coach westward = 12 + 22 = 34 meters

Taking x-direction as positive, we have;

The magnitude of the distance = 60 - 34 = 24 meters,

The direction of the coach = Eastward.

I think it's C hope this help