57. A body travels a distance of 3 km towards East, then 4 km towards North and finally 9 km towards Eas
(1) What is the total distance travelled ?
(1) What is the resultant displacement?
58. A boy walk
Answers
Explanation:
INGREDIENTS
2 Teaspoon black pepper
2 Teaspoon Jeera
2 Teaspoon Buddy soap
1 Teaspoon Fenugreek seeds (Methi seeds)
4 to 5 Cinnamon Big size (Dal Chini)
8 to 10 Lavang
3 to 5 Tej Pata
Make a fine powder of this ingredients.
Making Kada
Boil water 1 glass
Add a tea spoon of the powder.
5 to 6 pudina leaves and tulsi leaves.
3 to 5 Raisins (Kishmish)
Boil in a low flame for 3 to 5 minutes.
Off the gas and ½ lemon
Honey or Jaggery
Your Kada Is Ready To Serve.
Given A body travels travels a distance of 3km towards East, then 4km towards North and finally 9 km towards East.
So total distance travelled by body is length of the path traversed =AB+BC+CA=(3+4+9)km=16km
Displacement is the shortest path between source and destination.
So in this case it is Path OC.
If we see the diagram, as ABCD is a rectangle.
AB=CD=4KM
BC=AD=9KM
OD=OA+AD=3+9=12KM
Consider right angle triangle ODC
By Pythagoras theorem,
OC²=OD²+CD²=12²+4²
=144+16
OC²=160KM
OC=√160=12.65Km