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3 years ago

What is the key external force that allows a man to push a wheelbarrow

Physics

1 answer:

ivolga24 [154]3 years ago

8 0

Answer:

Friction

Explanation:

The key and most important external forces that allows a man to push a wheelbarrow is frictional force.

Frictional force is a force that opposes motion and will bring it to a halt.

The reason why motion is possible is due to frictional force.

Without friction, a body will move and continue in motion infinitely. No one will be able to control motion.

Therefore, frictional force is an external force that will allow a man to push a wheelbarrow.

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