Exploring Net Force and Vectors in Physics

What is a force in the simplest sense?

• A push or a pull

• A twist or a turn

• A stretch or a compress

• A lift or a drop

Tags

NGSS.MS-PS2-1

What does a vector represent?

• Neither magnitude nor direction

• Both magnitude and direction

• Only direction

• Only magnitude

If two forces of 5 Newtons each act in the same direction, what is the net force?

• 5 Newtons

• 10 Newtons

• 20 Newtons

• 15 Newtons

Tags

NGSS.MS-PS2-2

What happens when two forces of 5 Newtons each act in opposite directions on a box?

• The box remains stationary

• The box moves to the right

• The box moves in a circular path

• The box moves to the left

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the net force on an object in mechanical equilibrium?

• Zero

• Equal to the sum of all forces acting on it

• Equal to the tension in the supporting rope

• Equal to the weight of the object

Tags

NGSS.MS-PS2-2

If Nellie Newton weighs 300 Newtons and is supported by three ropes, what is the tension in each rope?

• 100 Newtons

• 150 Newtons

• 300 Newtons

• 50 Newtons

Tags

NGSS.MS-PS2-2

In a pulley system, what does the pulley change?

• The weight of the object

• The tension in the rope

• The direction of the rope

• The length of the rope

If two ropes support Nellie Newton and each rope has a tension of 150 Newtons, what is her weight?

• 200 Newtons

• 150 Newtons

• 300 Newtons

• 450 Newtons

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the effect of a slanted ceiling on the tension in the ropes supporting Nellie?

• Increases the tension in the shorter rope

• Changes the direction of the tension

• Decreases the tension in the shorter rope

• No effect on the tension

Will the vectors representing rope tensions still each be 150 Newtons if the ceiling is slanted?

• Yes, because the total weight remains the same

• No, because the angles change

• Yes, because the length of the ropes changes

• No, because the direction of the forces changes