The answer that’s your looking for is C
The answer is 2.66 x 10^8 J.
Answer:
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Machine
Subject: Science
Home Grade 9 Science Machine Machine
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Syllabus
Measurement
Force
Machine
Machine
Types of Simple Machine
Moment
Work Energy and Power
Sound
Light
Electricity and Magnetism
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Overview
Simple machine helps us by magnifying force, accelerating work and by changing the direction of force. This notes gives us the information about machine, its importance, mechanical advantage, velocity ratio.
Note
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Machine
We use various tools to perform different types of work in our daily life. The tools or simple devices used for making our work easier, faster and more convenient are simple machines.
Those tools or devices which make our work easier and convenient in the direction of the force is called simple machine.
Purpose of using simple machine
Simple machines are used to make our work easier in the following ways:
By multiplying force.
By changing the directions of force.
By transferring force from one point to another.
By increasing the rate of doing work.
THIS CAN HELP U
Technically, carrying her team-mate horizontally
along a level surface (D) doesn't require any 'work'.
Answer:
The horizontal speed is approximately 29 m/s.
Explanation:
Given that; range = 80 meters, height = 37 meters.
The horizontal speed can be determined by:
R = U
Where R is the range, U is the velocity of the object, H is the height and g is the acceleration due to gravity (9.8 m/
).
So that:
80 = U
= U
= U
80 = 2.747912U
⇒ U = 
= 29.1130
U ≅ 29 m/s
The horizontal speed is approximately 29 m/s.
