w = m x g
= mg
w = 20 x 9.8
20 x 9.8 = 196
The weight of an object with a mass of 20 kg is 196 newtons.
I used the approximate gravitational acceleration but it would be 200N if you used your 10m/s acceleration.
Answer:
Olivine, with the formula (Mg,Fe)₂SiO₄
Explanation:
Olivine is a mineral with the formula (Mg,Fe)₂SiO₄. It is a magnesium iron silicate (or ferromagnesian mineral) that constitutes the largest part of the earth's upper mantle. The mantle is the second layer of the earth found in between the core (below) and the crust (on top). It accounts for about 84% of the earth's volume (as regards the layers of the earth).
This question involves the concepts of the equations of motion both in the horizontal motion and the vertical motion.
The rock hits "30.91 m" away from the base of the building.
First, we will calculate the time taken by the rock to reach the ground by applying the second equation of motion in vertical motion:
where,
h = height of the building = 30 m
vi = initial vertical speed = 0 m/s
t = time = ?
g = acceleration due to gravity = 9.81 m/s²
Therefore,
t = 2.47 s
Now, we will calculate the horizontal distance by analyzing horizontal motion. Ignoring the air friction, the horizontal motion will be uniform:
where,
s = horizontal distance = ?
v = horizontal speed = 12.5 m/s
Therefore,
<u>s = 30.91 m</u>
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Learn more about equations of motion here:
brainly.com/question/5955789?referrer=searchResults
Answer:
Inertia = the resistance an object has to a change in its state of motion.
Explanation: