Question

a scoorterist covers a distance of 3 kilometre in 5 minutes. calculate his speed (meters per second)
a. 100m/s
b. 20m/s
c. 10m/s
d. 30m/s



please help me guys​

Answer 1

Answer

• Option ( c ) is correct

Given

• A scoorterist covers a distance of 3 kilometre in 5 minutes

To Find

• Speed in m/s

Concept Used

• 1 kilo meter = 1000 m
• 1 min = 60 s
• 1 km/h = ⁵/₁₈ m/s

• Speed is defined as distance travelled per unit time .

$\bullet \;\;\; \bf Speed=\dfrac{Distance}{Time}$

• SI unit of Speed is m/s

Solution

Distance , d = 3 km

⇒ d = 3 × ( 1000 m ) [ ∵ 1 km = 1000 m ]

⇒ d = 3000 m

Time , t = 5 min

⇒ t = 5 × ( 60 s ) [ ∵ 1 min = 60 s ]

⇒ t = 300 s

Now , Apply formula .

$\implies \rm Speed=\dfrac{Distance}{Time}\\\\\implies \rm S=\dfrac{d}{t}\\\\\implies \rm S=\dfrac{3000}{300}\\\\\implies \rm S=10\ m/s$

Speed of scooterist is 10 m/s .

Answer 2

Answer:

Given:

• A scooterist covers a distance of 3 kilometre in 5 minutes.

Find:

• Calculate his speed (meters per second).

Know terms:

• 1 km = 1000 m.
• 1 m = 60 sec.

Using formula:

• Speed = Distance/Time

Calculations:

= 3 (1000)

= 3000

= 5 (60)

= 300

Now using the above formula, we get:

= 3000/300

= 10 m/s

Therefore, 10 m/s is the speed of the scooterist.