Lesson 2 - Speed

Presentation

•

Science

•

7th Grade

•

Medium

Michael Angelo Dejando

Used 5+ times

FREE Resource

30 Slides • 12 Questions

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https://www.youtube.com/watch?v=cEItmb_a20M

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When we talk about how fast or slow an object or a person is, we are referring to speed.

This concept was introduced to you during elementary, and this time, we will relearn it in preparation for our next lessons on motion.

Submit your answer by selecting an option in the next slide.

Multiple Choice

Which car has a HIGHER SPEED as shown in the previous slide?

(You have 1 minute to answer this.)

Car A (20 m/s)

Car B (40 m/s)

Submit your answer by selecting an option in the next slide.

Multiple Choice

Which car will travel at a GREATER DISTANCE as shown in the previous slide?

(You have 1 minute to answer this.)

Car A (20 m/s)

Car B (40 m/s)

Submit your answer by selecting an option in the next slide.

Multiple Choice

Which car will take a SHORTER TIME TO TRAVEL an 80-meter distance as shown in the previous slide?

(You have 1 minute to answer this.)

Car A (20 m/s)

Car B (40 m/s)

Multiple Choice

Correctly complete this statement based on the guide shown in the previous slide.

The HIGHER the speed, the _______ is the distance traveled

and the ______is the time it takes to travel that distance.

greater; shorter

lesser; longer

Multiple Choice

Correctly complete this statement based on the guide shown in the previous slide.

The LOWER the speed, the _____ is the distance traveled and the ______ is the time it takes to travel that distance.

greater; shorter

lesser; longer

Tom loves taking care of birds. He sent a bird to deliver the note to his crush who lives 48 km away from his home. These birds fly at a speed of 24 km/h. How long will the note reach Tom’s crush?

Remember!

meter (m) is a unit of distance while second (s) is a unit of time

To solve for speed, divide the distance by the time. 

Take note of the correct formula to solve for the speed of a moving object.

Multiple Choice

Exercise #1: Solving for Speed (3 minutes to solve)

If you move 50 meters in 10 seconds, what is your speed?

50 meters per second

5 meters per second

500 meters per second

0.5 meters per second

Multiple Choice

Exercise #1: Solving for Speed (3 minutes to solve)

If a car travels 400 m in 20 seconds how fast is it going?

20 meters per second

2 meters per second

200 meters per second

800 meters per second

Remember!

meters per second (m/s) is a unit of speed while second (s) is a unit of time

To solve for distance, multiply the speed by the time. 

Take note of the correct formula to solve for the distance of a moving object.

Multiple Choice

Exercise #2: Solving for Distance (3 minutes to solve)

How far can Sam get if he can travel at a speed of 2.5 meters per second in 5 seconds?

12.5 meters

3 meters

0.5 meters

2 meters

Multiple Choice

Exercise #2: Solving for Distance (3 minutes to solve)

Jose throws a ball that moves at a speed of 35 meters per second and travels for a total of 4 seconds. Calculate the distance travelled by the ball.

39 meters

0.11 meters

140 meters

8.75 meters

Remember!

meters (m) and kilometers (km) are units of distance while meters per second (m/s) and kilometers per hour (km/h) are units of speed

To solve for time, divide the distance by the speed. 

Take note of the correct formula to solve for the time given the distance and speed.

Multiple Choice

Exercise #3: Solving for Time (3 minutes to solve)

How much time will it take for a bug to travel 5 meters across the floor if it is traveling at a speed of 1 m/s?

4 seconds

5 seconds

0.2 seconds

6 seconds

Multiple Choice

Exercise #3: Solving for Time (3 minutes to solve)

A car travels at a speed of 50 kilometers per hour. How long will it take for the car to travel 250 kilometers?

200 hours

300 hours

0.2 hours

5 hours

Please check our Science Google Classroom for the activity and the directions. :)

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