Answer:
I'm pretty sure its 3m/s^2 for the acceleration but I don't know the force part sorry .
Explanation:
15m/s - 0m/s divided by 5 s = 3m/s
I'm no expert or anything so I could be wrong but this is the best I can give you. Sorry
<span>In this situation when using newton's third law, the floor is very rigid and thus when we fall the floor applies
the same amount of force on us with which we were falling on it. The rigidness of the concrete floor makes it difficult for it to absorb some of our force. On the other hand sand is not rigid on impact sine it changes its shape while it absorbs a
large amount of our falling force and a small fraction of this
force is applied on is. That is why we don't get hurt</span>
Answer:
5.52 m
Explanation:
Using the equation;
Vy = Vo sin θ
Where; Vo = 2.25 m/s and θ = 35°
We get;
= 2.25 sin 35°
= 1.29 m/s
Thus; Vy = 1.29 m/s
But a = -9.81 m/s (against gravity)
t = 1.20 s and
y = Vyt + 1/2 at²
where y is the height above the water
= 1.29 × 1.2 + (1/2 × -9.81 × 1.2²)
= 1.548 + (-7.0632)
= - 5.5152 m
Thus; the height of the girl above the water is 5.52 m
