Question

A boy moves 3km along a straight line and then takes
a left furn througy 90° and moves for another 4km
Find the magnitude of displacement.
1) 7km 2)4km 3) 3km 4)5km
​

Answer 1

Explanation:

ʀᴇғᴇʀ ᴛʜᴇ ᴀᴛᴛᴀᴄʜᴍᴇɴᴛ..........

Answer 2

The magnitude of displacement is pythagoras theorem.

Magnetude of displacement =√( 3² + 4²)

= √( 9 + 16)

= √(25)

= 5km

The magnitude of displacement is 5km.

option 4.