Answer:
-9446.22 J
Explanation:
Parameters given:
Mass of climber and harness = 56kg
Mass of cable = 0.7kg
Distance between climber and top of rock face = 17m
The work done in pulling the climber is given as:
W = F * d
F is the force applied on the rope. It is opposite the force of gravity pulling the climber, hence, it is given as:
F = -Fg
Fg = force of gravity
Fg = m * g
g = acceleration due to gravity.
The mass of the climber, harness and cable = 56 + 0.7 = 56.7kg
=> Fg = 56.7 * 9.8
Fg = 555.66 N
Therefore, the work done will be:
W = - 555.66 * 17
W = -9446.22 J
The negative value of work means that the work done is opposite the value of the force acting on the climber.
<span>The answer in this question
is scale. The scale is used to determine the actual distance between two points
in a planimetric map. This map only represents the horizontal position of
features. This is also called by others as the line map. This is usually consisted of man-made and natural
features. These are from aerial shots by the use of modern technology. This map’s
common features are street and water centerlines, sidewalks, culverts, utility
lines, building footprints and vegetation. Sometimes, there are also other
useful data attached in this map like titles of the properties, owner, assessed
value, etc. It is because of these, this map becomes a storage of valuable data
which can be easily and quickly accessed. </span>
Answer:
If the acceleration of an object remains constant, then its velocity is constant. False
If the acceleration of an object moving along a line is always 0, then its velocity is constant. True
It is impossible for the instantaneous velocity at all times aless than or equalstless than or equalsb to equal the average velocity over the interval aless than or equalstless than or equalsb. True
A moving object can have negative acceleration and increasing speed. False
Explanation:
First of all, before we can talk of acceleration, then there must be a change in velocity. If the velocity of a body is constant, then there will not be any acceleration at all.
If the acceleration is zero, then there is no change in velocity, the velocity is constant.
The instantaneous velocity is always changing all through the motion hence it cannot be determined at all times to equal the average velocity.
If the acceleration is negative, it simply means that the velocity is decreasing with time. Hence there can't be a negative acceleration and increasing velocity.
No, you may have similar genetic material but not identical. You can have identical genetic material to your brother or sister if they are identical to you but not your parent because your genetic material consists of two people who have no relation to each other genetic material wise.
