0
What else can I help you with?
Some machines hurt people when they are sopose to help them?
true but machines hurt people when people dont use machines properly
Why does factories use so many machines?
They use machines so people don't have to work as hard.
Two reasons why people use simple machines?
The two reasons why people use simple machines are because they make things easier to pull and lift.
Who invented simple machines and when?
Simple machines were not invented by a single individual; rather, they were developed over time through the contributions of various ancient civilizations. The concept dates back to at least 250 BC, with Greek philosopher Archimedes known for his work on levers and pulleys. Other simple machines, such as the wheel, incline plane, and wedge, can be traced back to early human history, with evidence of their use in ancient Egypt and Mesopotamia.
Who invented the roller ball bearing?
It is not known who specifically invented the roller ball bearing. There are examples of their use by the ancient Egyptians. However, it is thought that they may have been invented before the wheel.
What did people use before the zipper was invented?
Buttons.
What did people use before motorcycles invented?
bikes
What did people use before couches were invented?
benches
What did people use before dynamite was invented?
pickaxes
What did people use for transportation before use cars was invented?
carriages
What do people use before window screens were invented?
Fingernails!!
What did people use before backpacks were invented?
Brief case
What did people use before vehicle were invented?
horses or their feet.
What did people use before the battery was invented?
wall sockets
What did people use before the ATM was invented?
We used letters.
What did people use before a typewriter was invented?
A pen and paper!
How did people travell before cars were invented?
they use to walk
