Balanced and unblanced forces

Elisha Otis invented the first elevator .

• True

• False

Answer explanation

Elisha didn't invent the first elevator, he made elevators safer by adding breaks

Why elevators fall?

• Gravity

• Friction

• Magnetic force

Tags

NGSS.MS-PS2-4

If Forces are balanced , Motion ............

• Changes

• stays the same

Tags

NGSS.3-PS2-1

If Forces became unbalanced , Motion ...........

• Changes

• Stays the same

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The machine lifts the crate.

The Forces are ........

• Balanced

• un-balanced

Answer explanation

The machine is exerting a big force to lift the crate and overcome the gravity and the wieght .

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

The sum of forces acting on an object is called ..........

• Balanced forces

• Net Forces

• Unbalanced forces

Tags

NGSS.MS-PS2-2

Equal forces acting on an object in an opposite direction , called ..........

• Balanced forces

• Net Forces

• Unbalanced forces

Tags

NGSS.MS-PS2-1

Non-Equal forces acting on an object in an opposite direction , called ..........

• Balanced forces

• Net Forces

• Unbalanced forces

Calculate the net force.

• 175 - 75 = 100

• 175 + 75 = 250

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Calculate the net force.

• 9 + 9 = 18

• 9 - 9 = 0

• 9 X 9 = 81

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2