Forces, Energy & Speed

What is the formula for speed?

• distance * time

• time / distance

• distance / time

• time * distance

Tags

NGSS.MS-PS3-1

Distance is the ___________ between two points.

• length

• smell

• depth

• direction

What two pieces of information are needed to calculate average speed?

• speed and time

• distance and time

• velocity and time

• acceleration and time

Tags

NGSS.MS-PS3-1

How do you find the average of your data?

• Add up all trials

• Add up all trials and divide by the number of trials

• Add up all trials and multiply by the number of trials

• Divide then add

Frame of reference usually refers to something that is __________ with respect to an observer for detecting motion.

• always moving

• sometimes moving

• not moving

• barely moving

A vector includes both ___________ and _____________.

• size, direction

• time, space

• sweet, sour

• distance, acceleration

Which would NOT make a good reference point?

• A flagpole

• A school

• A moving child

• A stop sign

Select the Net Force applied to the box

• 30 N Left

• 20 N Right

• 40 N West

• 40 N Right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Describe the forces on the box

• Balanced forces. Not moving. 0 N

• Unbalanced. Moving. 90 N Up

• Balanced. Moving. 50 N Up

• Unbalanced. Moving. 65 N Up

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

What causes Motion?

• Equal magnitude forces cause motion

• Opposite direction forces cause motion

• Unbalanced net force causes motion

• Zero sum of all forces causes motion

Tags

NGSS.MS-PS2-2