Question

Chanice drives her scooter 7 kilometers north. she stops for lunch and then drives 5 kilometers and then 1 km east again. what distance did he cover? what was his diplacement?

Answer 1

Distance covered is given as follows

1). 7 km North

2). 5 km North

3). 1 km East

Now total distance covered will be given as

`d = d_1 + d_2 + d_3`

`d = 7 km + 5 km + 1 km`

`d = 13 km`

Now in order to find the displacement we will show all with their directions

`\vec d_1 = 7 + 5 = 12 km` towards North

`\vec d_2 = 1 km` towards East

So total displacement is

`\vec d = \vec d_1 + \vec d_2`

`\vec d = 12 \hat j + 1 \hat i`

so net displacement will be

`d = √(12^2 + 1^2) = 12.04 km`

so displacement is 12.04 km