Question

a train travels with a uniform speed covers a distance off 150 km 5 sec calculate a speed of the train time it takes to cover 240km

Answer 1

Explanation:

speed=distance÷time

=150000÷5

=30000m/s

time=distance÷speed

=240000÷30000

=8 sec

Answer 2

The train takes 8 sec to cover the distance of 240 km

Explanation:

• Uniform motion is defined as distance covered by any object is same for any given interval to time and throughout the journey object covers the same distance for same interval of time. In uniform motion speed of the body remains constant hence body do not accelerate for example if a motorcycle is ridden on 60 km/hr then for uniform motion it must maintain its speed hence no acceleration should be provided to the motorcycle

The train is moving with uniform speed hence it covers equal distance in equal interval of time

Given, Distance covered = 150 km

Time taken = 5 sec

Next distance covered = 240 km

Let the time is taken = t sec

Speed = $\frac{distance}{time}$

=> speed = $\frac{150}{5}$

=> speed = 30 km / s      ..............................(1)

Speed = $\frac{240}{t}$

=> by using equation (1)

=> 30 =$\frac{240}{t}$

=> t = 8 sec

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