Question

a man travels a distance of 1.5 meter towards the east, then 2.0 meter towards the south and finally 4.5m towards the east in 4 s. Calculate (2)distance travelled and (b) displacement of the body

Answer 1

displacement = 6.3245 m

Answer 2

distance travelled = 1.5 m + 2.0 m + 4.5 m = 8.0 m

Answer 3

so wats d use of time ?
is that useless?

Answer 4

I think it is just given to confuse...
It plays no part in distance calculation nor displacement calculation...

Answer 5

ya may be ...

Answer 6

displacement will be equal to the hypotenuse of the Right triangle having
base 6m (1.5 + 4.5)
altitude 2m
Using Pythagoras theorem
Hypotnuse^2 = (6m)^2 + (2m)^2 = 36m^2 + 4m^2 = 40m^2
so Hypotenuse = root(40m^2) = 2root(10) m or 6.325 m

Answer 7

we can also use the graph method
starting form origin (0,0) and the final position of the man ,i.e, (6,2)
From Distance formula
D=sqroot* ( (6-0)^2 +(2-0)^2 )
D= 6.3245 m

Answer 8

hey guys if u want to make a ²(square sign) then press alt+253

Answer 9

thanks sukarang !!!