Balanced and Unbalanced Forces

You are in a car driving and the breaks are applied, you fly forward, which Law is this?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 2nd and 3rd law

You and your dog are playing tug-of-war. For a while, neither of you are winning, but after a few hard tugs you are able to pull the toy away from your dog. What happened in this scenario?

• The forces were unbalanced when no one was winning and then balanced when you pulled the toy away.

• The forces were balanced when no one was winning and then unbalanced when you pulled the toy away.

• There were no forces acting on the toy when it was a tie, then were balanced when you pulled the toy away.

• There were no forces acting on the toy when it was a tie, then were unbalanced when you pulled the toy away.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

______________ forces are unequal forces that cause a change in an object’s motion.

Tags

NGSS.MS-PS2-2

1. What is the unit of measurement for force?

• A. Kilogram

• B. Newton

• C. Meter

• D. Joule

Which of the following is an example of balanced forces?

• A. A car accelerating

• B. A football player tackling another player

• C. A person lifting weights

• D. A runner jogging at a constant speed

Which of the following is an example of unbalanced forces?

• Pushing a lawnmower across the yard

• A car traveling at a constant speed

• A person sitting on a chair

• A book sitting on a shelf

Tags

NGSS.MS-PS2-2

Which of the following is not a characteristic of balanced forces?

• Equal forces

• Net force equals 0 Newtons

• Causes a change in an object’s motion

Which of the following is not a characteristic of unbalanced forces?

• Forces that act on objects

• Net force equals 0 Newtons

• Causes a change in an object’s motion

• Can be a push or a pull

______________ forces are equal forces that do not cause a change in an object’s motion.

A change in motion will not occur if the net force is greater than 0 Newtons.

• True

• False

Tags

NGSS.MS-PS2-2