Question

a car moving on a staraight path covers a distance of 1 km due to east in 100s.what is i)speed ii)the velocity of the car

Answer 1

AnsWer :

i) 10 m/s.

ii) The velocity of the toward the east at Speed of 10m/s.

Given :

• A car moving on a straight path.
• Distance cover 1 km.
• time is 100 second.

Formula Required :

$\tt D = S \times t.$

• D distance.
• S Speed.
• t time.

Solution :

• 1 km = 1000 m.

i)

We have formula,

$\tt \implies D = S \times t.$

$\tt \implies 1000 = S\times 100$

$\tt \implies S = \frac{1000}{100}$

$\tt \implies S = 10 \: m / s.$

ii)

• When Car moving toward east than, the velocity of car is 10 m/s toward east.

Answer 2

Clearly, distance is equal to displacement here as the path is a straight line.

We have,

Distance travelled = 1 km = 1000 m

Time taken = 100 s

(I) SPEED:-

We know, v = s/t

⇒ v = (1000 m)/(100 s) = 10 m/s ...(1)

(II) VELOCITY:-

We know, v = s/t

⇒ v = (1000 m)/(100 s) = 10 m/s towards East. (2.)