Activity 8.6 Class 9 Science Chapter 8 Motion

Activity 8.6 Class 9 Science Chapter 8 Motion

 

Activity 8.6 Class 9 Science Chapter 8 MotionWhat activity asks from us?

Activity 8.6 asks us to calculate the time; that we take while going to bus-stop or school; and calculate the distance if our speed is 4km/hr.

Answer:

Speed is the distance traveled in a unit time. Here it is given in km/hr, so we need to calculate walking time in an hour. For example if it takes 12 minutes to reach school then time in the hour will be 12/60 =0.20 hr.

Now,  Distance= speed x time

so, distance= 4 km/hr x 0.20 hr

=0.8 km or 800 meter.

 

We can also convert km/hr speed to meter/minute or meter/minute. In all the case answers will be the same. The precaution to take is that time should also be in the same unit. Here, for a shorter distance or small walk time we should prefer meter/minute and minute.

See also:

Activity 8.5 Class 9 Science Chapter 8 Motion.

Activity 8.7 Class 9 Science Chapter 8 Motion.

***Activity 8.6 Class 9 Science Chapter 8 Motion***

 

 

Ref: NCERT Class 9 Science Chapter 8.

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