Question

Pls answer this I am poor in physics pls pls help me

Answer 1

Explanation:

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Answer 2

Explanation:

(1)

The girl goes back and forth;

So,

The net distance = 80 + 80

= 160 m

(2)

A scalar quantity is a quantity which can be define by its magnitude only.

(3)

Ex : Distance, speed, time, temperature, etc.

(4)

Odometer

(5)

SI unit of distance is a meter.

(6)

Proficient Moderator

Side of the square = 10 m

Perimeter of the square = 4×10 = 40 m

He completes 1 round in 40 s.

So, speed = 40/40 = 1 m/s

So, distance covered in 2 min 20 s or 140 s is = 140 × 1 = 140 m

Number of rounds of the square completed in moving through 140 m is = 140/40 = 3.5

In 3 rounds the displacement is zero. In 0.5 round the farmer reaches the diagonally opposite end of the square from his starting point.

Displacement = AC = (AB + BC ) = (100+100) = 10√2 m

Hope it helps!