Lesson 2 - Speed

Please click this link:

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

Open Ended

What are your insights after watching the said video?

Share them here! You are given 5 minutes to type your answer. :)

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. :)