Homework Help: science

Posted by nani on Sunday, July 29, 2012 at 11:05am.

a person moves 30m north, then 20m east and then 30(square root of two)m south west . His displacement from the original position is ?.

science - Henry, Tuesday, July 31, 2012 at 4:53pm
Draw 3 vectors from the origin:

20m @ 0 Deg.(East).
30m @ 90 Deg.(North).
30*sqrt2 @ (270-45)Deg.(Southwest).

X = Hor. = 20 + 30*sqrt2*cos225 = -10m.
Y = Ver. = 30 + 30*sqrt2*sin225 = 0.

D = sqrt(X^2+Y^2)
D = sqrt(100+0) = 10 m.

NOTE: sqrt = Square root.

Answer this Question

Related Questions

physics - the number on the left is the displacement, on the right is the vector...
Physics - A person walks the path shown below. The total trip consists of four ...
Physics - Vectors and Scalars Graph 1. determine the total distance traveled and...
Physics - A person walks the path shown below. The total trip consists of four ...
physics - A person walks the path shown below. The total trip consists of four ...
science - displacement vectors of 5km north, 3km east, 2km south, and 3km west ...
cardinal directions - what is the difference between Northeast and North of East...
Physics - An electron moves with speed 2.46 x 105 m/s in a 1.39-T uniform ...
physics - Consider a map oriented sot hat the x axis runs east-west (with east ...
physics - While exploring a cave, a spelunker starts at the entrance and moves ...

For Further Reading

First Name:
School Subject:
Answer: