Question

A car makes a displacement of s1 of 10 km towards east and turns 45 degrees and makes a further displacement of s2 of 30 root 2 towards north-east. Then the magnitude of it's net displacement is?

Answer 1

Explanation:

In vector form:

S

=30

j

^

+20

i

^

+30

2

cos45

o

(−

i

^

)+30

2

sin45

o

(−

j

^

)

=30

j

^

+20

i

^

−30

i

^

−30

j

^

=10

i

^

∴ Displacement is 10m towards west