Newton's 3rd Law

Newton's _____ Law of Motion means that for every force there is a reaction force that is equal in size, but opposite in direction.

• First
• Second
• Third
• Fourth

Tags

NGSS.MS-PS2-1

Acceleration due to gravity, g, is ____ m/sec2.

• 4.9
• 9.8
• 19.6
• 39.2

According to Newton's _____ Law of Motion, when a hammer strikes and exerts force on a nail, the nail exerts an equal force back on the hammer.

• First
• Second
• Third
• Fourth

If you push a skateboard with a force of 8 N and your mass is 80 kg, what is the force that the skateboard exerts on you?

• 75 N

• 8 N

• 7N

• 10 N

Tags

NGSS.MS-PS2-1

The force that responds to the first force in a force pair

• Reaction Force

• Action Force

The forces in a force pair are in ____ direction.

• Opposite

• Same

The forces in a force pair are the ____ strength.

• Same

• Opposite

Newton’s 3^rd Law of motion states that any action will have a(n) ________and ______reaction

• Equal and similar

• Equal and different

• Equal and opposite

• Greater and opposite

Tags

NGSS.MS-PS2-1

A book rests on a table. The force of gravity pulls down on the book with a force of 20N. What prevents the book from accelerating downward at 9.8m/s²?

• The table and the book are pushing back with an acceleration of 9.8m/s².

• The table presses back up on the book with a force greater than 20N

• The inertia of the book is equal to the inertia of gravity

• The table presses back up on the book with an equal and opposite force of 20N

Describe the other force in the action-reaction force pair

• The glove pushes the baseball to the right

• The glove pushes the baseball backward

• The glove pushes the baseball downward

• a. None of the above