Download App

Measurement of Time and Motion — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceMeasurement of Time and Motion5 Marks
Question
Define average speed and explain how it is calculated.
✓

Answer

→ Average speed is the total distance an object travels divided by the total time it takes to travel that distance. It tells you how fast an object moves on average over its entire journey, even if its speed changes along the way.
→ To calculate average speed,
→ Average Speed $=\frac{\text { Total Distance Covered }}{\text { Total Time Taken }}$
To Calculate Average Speed
→ First, determine the total distance the object has traveled.
→ Next, find the total time it took to travel that distance.
Example: Suppose a car travels 120 kilometers in the first 2 hours and then 80 kilometers in the next 3 hours.
→ Total Distance = 120 km + 80 km = 200 km
→ Total Time = 2 hours + 3 hours = 5 hours
→ Use the formula for average speed:
→Average Speed $=\frac{200 km}{5 h}=40 km / h$
→ So, the average speed of the car is :40/km/h

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "5 Marks Questions" from Measurement of Time and Motion→Measurement of Time and Motion — all question types→Science STD 7 question papers→Gujarat Board STD 7 question papers→Gujarat Board question paper generator→

Similar questions

What precautions should you take while using a laboratory thermometer?
→
Match the names of organisms in Column $I$ with their organs of breathing given in Column $II.$
 
Column $I$
 
Column $II$
$(a)$
Butterfly
$(i)$
lungs
$(b)$
Earthwarms
$(ii)$
gills
$(c)$
Sparrow
$(iii)$
spiracles
$(d)$
Fish
$(iv)$
skin
→
State the differences between acids and bases.
→
What are the differences between acids and bases?
→
Match the items given in Column I with those in Column II:
Column I Column II
Chlorophyll Rhizobium
Nitrogen Heterotrophs
Cuscuta Pitcher plant
Animals Leaf
Insects Parasite
→
Sachin lives in an area where on and off water scarcity is there. He gave a thought to the problem and planned to get a solution. He decided to harvest rainwater in his village. He made efforts to convince the people of his area, built some drainage system and water tanks where rainwater could be collected.
  1. Name few structures he might have built.
  2. Name the process of water cycle, Sachin will use for harvesting water.
  3. Write the methods, Sachin will tell the people to use water wisely.
→
Describe the process of neutralisation with the help of an example.
→
Make simple pendulums of different length and note their time periods and state the relation between length and time period of it.
→
What causes lightening?
→
Write the major steps by which we can conserve the forest.
→