That means the rock has a downward force due to gravity of
(9.8)(36,000) = 352,800 N downwards on a free body diagram. If the rock is balanced, that means the normal force up is equal to 352,800 N. And due to Newton's about equal and opposite reactions, if the pedestal is pushing up on the rock with 352,800 N of force, then the rock is exerting 352,800 N of force onto the pedestal.
Answer:
1) from the positive x-axis.
2)
Explanation:
Given:
speed of rowing in still water,
1)
speed of water stream,
we know that the direction of resultant of the two vectors is given by:
where:
the angle of resultant vector from the positive x-axis.
angle between the given vectors
When the rower wants to reach at the opposite end then:
so,
from the positive x-axis.
2)
Now the resultant velocity of rowing in the stream:
Therefore time taken to cross a 4 miles wide river:
<em><u>ANSWER</u></em>
my answer is in the photo above
<u>EXPLANATION</u>
A solvent is a substance in which a solute dissolves and solvents are in most cases liquids while a solute is a substance that dissolves in a solute and in their especially solid in nature
Answer:
Explanation:
His Kinetic energy = 1/2 m v^2
v = 5 m/s
m = 75 kg
Ke = 1/2 75 * 5^2
Ke = 937.5 Joules
This will be converted to PE when he reaches the maximum height he reaches. In other words KE = PE
PE = m * g * h
m = 75
g = 9.81
h = ?
PE = 937.5
937.5 = 75 * 9.81 * h
937.5 = 735.75 * h
937.5/735.75 = h
h= 1.27 meters