Bellringer 11/17: Forces

If Shane and Susan both push on a box with a force of 25N, but in opposite directions, what will happen to the box?

• A)The box will not move.

• B)The box will slide toward Shane.

• C)The box will slide toward Susan.

• D)The box will be perpendicular to both Shane and Susan.

Why does an object in motion stay in motion unless acted on by an unbalanced force?

• A)because forces are what stop and start motion

• B)because balanced forces cannot exist in nature

• C)because motion is the inherent state of all matter

• D)because motion, once begun, continues to accelerate

Meg and Rachel each have bowling balls with the same mass. They both roll them as hard as they can and then measure the speed of the balls.Meg's ball and Rachel's ball were measured to have the exact same speed.What do you know about the forces applied by the girls?

• A)Meg applied more force than Rachel.

• B)Rachel applied more force than Meg.

• C)They applied an equal amount of force.

• D)They applied a almost the same amount of force.

Which of the following is an example of increasing friction intentionally?

• waxing skis

• adding grease to gears on a bike

• throwing sand on an icy driveway

• oiling a squeaky door

What is the unit to MEASURE force?

• Kilogram

• Meter

• Pounds

• Newton

Tags

CCSS.8.EE.A.4

A ____________ is a push or a pull on an object.

• friction

• force

• magnet

• gravity

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If these teams are pulling with the same amount of force what will happen?

• The boy in blue will win.
• They will not move at all.
• The boy in red will win.
• Both will fall down.

Tags

NGSS.MS-PS2-1

Balanced or unbalanced?

• balanced
• unbalanced

Tags

CCSS.6.NS.C.5

Forces that have a net force of zero Newtons

• Balanced force

• Unbalanced force

What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

Tags

NGSS.MS-PS2-2