Answer:
You drop a rock from rest out of a window on the top floor of a building, 30.0 m above the ground. When the rock has fallen 3.00 m, your friend throws a second rock straight down from the same window. You notice that both rocks reach the ground at the exact same time. What was the initial velocity of the ...... rest out of a window on the top floor of a building, 30.0m above the ground. ... You Notice That Both Rocks Reach The Ground At The Exact Same Time. ... You drop a rock from rest out of a window on the top floor of a building, 30.0m ... When the rock has fallen 3.20 m, your friend throws a second rock straight down from ...
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
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
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
Answer: Work equals force times distance. 3,000 J
Answer:
the answer from my side is both vertical and horizontal
Answer:
2.1×10¹ m/s
Explanation:
Given:
v₀ = 1.0 m/s
a = 4.9 m/s²
t = 4.0 s
Find: v
v = at + v₀
v = (4.9 m/s²) (4.0 s) + (1.0 m/s)
v = 20.6 m/s
Rounded to two significant figures, the velocity is 21 m/s.
In scientific notation, the velocity is 2.1×10¹ m/s.
