Exploring Position, Speed, and Direction in 7th Grade Math

This video summarizes Unit 5, Lesson 8, focusing on position, speed, and direction. It covers using signed numbers to represent movement, the formula for distance, rate, and time (D=RT), and how to calculate velocity. The video also explains the rules for multiplying positive and negative numbers, emphasizing that velocity includes both speed and direction.

What is one of the learning goals mentioned in the video?

• I can multiply a positive number with a negative number.

• I can divide a positive number by a negative number.

• I can subtract a positive number from a negative number.

• I can add two negative numbers.

What does the formula D = RT represent?

• Distance equals rate divided by time.

• Distance equals rate plus time.

• Distance equals rate times time.

• Distance equals rate minus time.

How do you find the rate if you know the distance and time?

• Multiply distance by time.

• Divide distance by time.

• Subtract time from distance.

• Add distance and time.

How can we represent a position to the left of a starting point without using words?

• Using negative numbers.

• Using zero.

• Using positive numbers.

• Using fractions.

If you run 3 meters per second to the left, where will you be after 4 seconds?

• At position -3 on the number line.

• At position -12 on the number line.

• At position 12 on the number line.

• At position 3 on the number line.

What term is used to represent speed with a direction?

• Acceleration

• Velocity

• Momentum

• Force

If a car is moving east at 58 miles per hour, what would be the velocity if it was moving west at the same speed?

• 100 miles per hour

• -58 miles per hour

• 0 miles per hour

• 58 miles per hour

What kind of number do you get when you multiply a positive number by another positive number?

• Positive

• Zero

• Negative

• Undefined

What kind of number do you get when you multiply a negative number by a positive number?

• Zero

• Negative

• Positive

• Undefined

What is the term used to describe speed in opposite directions?

• Momentum

• Velocity

• Force

• Acceleration