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nydimaria [60]
3 years ago
13

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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