Answer:
the answer is fulcrum because
Explanation:
lever is a simple machine consisting of a bar that rotates around a fixed point. The fixed point of a lever is called the fulcrum. Like other machines, a lever makes work easier by changing the force applied to the machine or the distance over which the force is applied
I’m lost at this question, sorry but I would’ve help !
Answer:
1. 37.8J
2. 18 Billion Joules, 18 Gigajoules
3. 9.81 Billion Joules, 9.81 Gigajoules
Explanation:
Use the formulas provided,
KE=(1/2)mv^2 and PE=mgh, noting that g=9.81
Answer:
3 seconds
Explanation:
Height of the building = 400 feet
Height of the ball from the ground is given by
h=400−16t²
This formula has been derived from
a = Acceleration due to gravity = 32 ft/s²
u = Initial velocity = 0
t = Time taken
Substituting all the values we get
This is the height of the ball from the top of the building
The height of the ball from the ground will be
h = 400-s
⇒h = 400−16t²
When h = 256 ft
Time taken by the ball to reach a height of 256 feet above the ground is 3 seconds
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Explanation:</u></h2>
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<u />
<h3>Potential:</h3>
- This refers to an object having energy running through it, but being stored. It hasn't quite been released yet.
- Ex: <em>Someone waiting to dive into a pool, when a whistle blows.</em>
<h3 /><h3>Kinetic: </h3>
- This refers to the energy going through an object but that energy is moving, it's been released.
- Ex: <em>A boy pedaling his bike atop a hill. </em>
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