ANSWER: the answer is C, vacuum
<span>A moving object can be described by its velocity. Velocity is how fast an object is moving. Known as speed AND in what direction. A plus or minus sign is often used as an indicator of direction. So an object with a velocity of -34 m/s is moving with a speed of 34 m/s in. the - direction.</span>
Answer:
so eaasy
Explanation:
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Answer:
the ambulance have to travel 4507.847 feet to get to the accident
Explanation:
Let D represent position of ambulance
Let C represent position of accident scene
The situation is represented in the below attached figure
In the figure we have
AB = 4000 feet
![](https://tex.z-dn.net/?f=%3CXAC%3D%3CACB%3D21%5E%7Bo%7D)
Thus in triangle ABC we have
![tan(21)=\frac{AB}{BC}\\\\\therefore BC=\frac{AB}{tan(21)}=\frac{4000}{tan(21)}=10420.356feet](https://tex.z-dn.net/?f=tan%2821%29%3D%5Cfrac%7BAB%7D%7BBC%7D%5C%5C%5C%5C%5Ctherefore%20BC%3D%5Cfrac%7BAB%7D%7Btan%2821%29%7D%3D%5Cfrac%7B4000%7D%7Btan%2821%29%7D%3D10420.356feet)
In triangle ABD we have
![tan(15)=\frac{AB}{BD}\\\\\therefore BD=\frac{AB}{tan(15)}=\frac{4000}{tan(15)}=14928.20feet](https://tex.z-dn.net/?f=tan%2815%29%3D%5Cfrac%7BAB%7D%7BBD%7D%5C%5C%5C%5C%5Ctherefore%20BD%3D%5Cfrac%7BAB%7D%7Btan%2815%29%7D%3D%5Cfrac%7B4000%7D%7Btan%2815%29%7D%3D14928.20feet)
Thus the distance between the ambulance and accident scene will be 14925.20-10420.356 = 4507.847 feet
Answer:
A. 200 J
Explanation:
The initial kinetic energy depends on the initial speed, while the gravitational potential energy depends on the height, both balls are thrown with the same initial speed and from the same height. Therefore, due to the law of conservation of energy, the balls must have the same mechanical energy (the sum of both energies) when both impact the ground. Since the potential energy is zero at this point, its final kinetic energy must also be the same.