Answer:
The answer is C.<em>19.8 m/</em><em>s</em><em> </em>because it's their common velocity after the collision of the two cars.
Explanation:
Hello !
look at the attachment above ☝️ and if you have any questions you're welcome.
Answer:
<em>Answer: Work equals force times distance. 3,000 J</em>
Explanation:
Work Done By A Force
When some force
is applied and a displacement
is achieved, the work done by the force is given by
![W=\vec F \cdot \vec r](https://tex.z-dn.net/?f=W%3D%5Cvec%20F%20%5Ccdot%20%5Cvec%20r)
Note that the work is a scalar magnitude as the result of the dot-product of two vectors. If the force and the displacement are parallel, then the vectors can be replaced as its magnitudes F,x and the work is
![W=F.x](https://tex.z-dn.net/?f=W%3DF.x)
The dot product becomes a simple arithmetic product, i.e force times distance.
Sara weighs 500 Nw and she climbs up a 6 meter set of stairs. She needs to lift her weight up, so the force is the weight and the distance is the height of the stairs, thus
![W=500\ Nw.\ 6\ m=3,000\ Joule](https://tex.z-dn.net/?f=W%3D500%5C%20Nw.%5C%206%5C%20m%3D3%2C000%5C%20Joule)
Answer: Work equals force times distance. 3,000 J
Answer:
gravity
Explanation:
Gravity pulls the planets toward the Sun. Gravity pulls the moon toward Earth. Gravity pulls us toward the Earth. Gravity is a force. Inertia.
Answer:
Explanation:
Let the race be of a fixed distance x
![Average Speed = \frac{Total Distance}{Total Time}](https://tex.z-dn.net/?f=Average%20Speed%20%3D%20%5Cfrac%7BTotal%20Distance%7D%7BTotal%20Time%7D)
Troy's Average speed = 3 miles/hr = x / 0.2 hr
x = 0.6 miles
Abed's Average speed = 0.6 / 0.125 = 4.8 miles/hr