forces review!

which direction does the force of gravity always point?

• perpendicular into the surface the object is on

• straight up

• straight down

• perpendicular out of the surface the object is on

Tags

NGSS.HS-PS2-4

the box is at rest on a table. what direction does the normal force point?

• up and right

• left

• right

• up

the box is moving with a constant velocity to the right. Which direction does the normal force point?

• up

• down

• right

• left

Tags

NGSS.HS-PS2-1

which direction does the normal force point?

• straight down

• up & right

• up & left

• down and left

Tags

NGSS.HS-PS2-1

if an object is moving, can it still be at equilibrium? (sum of f = 0)

• yes!

• no!

Tags

NGSS.HS-PS2-1

the spring is in compression. which direction does the spring force on the box point?

• left

• right

• up

• down

Tags

NGSS.HS-PS2-1

the spring is in extension (stretched out). which direction does the spring force on the box point?

• up

• down

• right

• left

Tags

NGSS.HS-PS2-1

a mass hangs on the end of a spring (not moving). which direction does the spring force on the mass point?

• up

• down

• right

• depends on the mass

Tags

NGSS.HS-PS2-1

a box with known mass is on a slanted and frictionless ramp, with gravity and normal force (unknown magnitude) acting on it. If you wanted to find the acceleration of the box, what would be your first step?

• set normal force equal to gravity

• rotate the coordinate system to align with the ramp - split gravity into those components

• f = ma

• split the normal force into components

Tags

NGSS.HS-PS2-1

m1 and m2 are held together by a rope on a pully. what direction is the tension force by the rope on m1?

• up

• down

• right

• left

Tags

NGSS.HS-PS2-1