Question

an electric train is moving with a velocity of 120kmph, how much distance Will it cover in 30 seconds​

Answer 1

Covert speed to m/s

120 km/hr = 120 × 5/18 m/s = 100/3 m/s

Time = 300 s

speed = 100/3 m/s

Hence distance = Time × speed

→ 300 × 100/3

= 10000 m

= 10 km

Answer 2

Answer:

Distance = 1 km

Explanation:

Given:-

• An electric train is moving with a velocity of 120kmph in 30 second

To Find:-

• The distance

Solution:-

$\bf \: Speed = \purple{ 120 \: kmph} \\ \\ \bf \:Time = 30 \: sec \\ \\ \dashrightarrow \sf \: \cancel\frac{30}{3600} hr \: \: \: \: \: \: \bigg \{ \because \:1 \: hr = 3600 \: sec \bigg \} \\ \dashrightarrow \: \pink{ \bf\frac{1}{120} hr}$

♣ As we know that -

$\mapsto \color{aqua}\boxed{ \bigstar\bf \: Distance = Speed \times Time}$

So,

$\sf \: Distance = \cancel{120 }\times \frac{1}{ \cancel{120} } \\ \bf \longrightarrow \boxed{ \bf \color{navy} \: 1 \: km}$