Average Speed 7A

Average Speed

​Everyone should have notes on average speed. Don't forget to write your name, date and day on top of the worksheet.

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​While watching the video fill in the blanks on your worksheet

Multiple Choice

What is the formula to calculate speed?

• Speed = Distance x Time
• Speed = Distance/Time
• Speed = Time/Distance
• Speed = Time x Distance

Multiple Choice

What is the equation to calculate distance?

• distance = speed/time
• distance = time/speed
• distance = speed/distance
• distance = speed x time 

Multiple Choice

What is the equation to calculate time?

• time = speed/distance
• time = distance/speed 
• time = speed x distance 
• time = distance x speed

​Next slide Video on example 1

​Don't forget to copy and understand the examples while you watch the video

​Try yourself 1

​Try to solve the problem inside your worksheet first then type in the answer on the next slide to check your answer.

Fill in the Blanks

Try yourself 1

A car traveled for 5 hours at 60km/h and then 3 hours at 80 km/h before it finally reached its destination. What is its average speed?

(don't forget to write your unit in km/h without space)

​Next slide Video on example 2

​Don't forget to copy and understand the examples while you watch the video

​Try yourself 2

​Try to solve the problem inside your worksheet first then type in the answer on the next slide to check your answer.

Fill in the Blanks

Try yourself 2

Ali drove 200km with an average speed of 50km/h in the morning and travelled 360km with an average speed of 60 km/h in the afternoon. What was the average speed of his journey?

(don't forget to write your unit in km/h without space)

​Next slide Video on example 3

​Don't forget to copy and understand the examples while you watch the video

​Try yourself 3

​Try to solve the problem inside your worksheet first then type in the answer on the next slide to check your answer.

Fill in the Blanks

Try yourself 3

Haslina ran a distance of 320 meters in 50 seconds and another 160 meters in 30 seconds. What was her average speed?

(don't forget to write your unit in m/s without space)

Multiple Choice

Constant speed is:

• When the speed increases or decreases
• When the speed of the object does not change

Multiple Choice

What is the formula for average speed?

• Average Speed = Total Time undefined Total Distance

• Average Speed = Total Time + Total Distance

• Average Speed = Total Distance $$\div$$ Total Time

• Average Speed = Total Distance $$\times$$ Total Time

​Next do the exercise question 1 -5

​Don't forget before the end of lesson to self assess the lesson today on the paper given.