Question

A train travelling due north on a straight railway
track covers a distance of 5 km in 10 minutes.
What is the speed and the velocity of the train
expressed in SI units?​

Answer 1

Answer:

Speed = velocity = 8.333 m/s.

Explanation:

SI unit for both speed and velocity is m/s.

5km in meters is 5000 m.

10 mins in seconds is 600 sec.

Speed = distance/time

= 5000/600

= 25/3

= 8.333 m/s

Since the train is traveling in one direction and in a straight line, the speed is equal to its velocity, i.e, 8.333 m/s.

Hope this helps :)

Answer 2

Answer:

speed=8.33m/s

velocity=8.33m/s due north

Explanation:

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

distance=5km=5000m

time=10 minutes=600 seconds

∴speed=$\frac{5000}{600}$

speed=8.33m/s

velocity=$\frac{distance}{time}$ (in respect to the direction)

distance=5km=5000m

time=10 minutes=600 seconds

direction=north

∴velocity=$\frac{5000}{600}$ due north

velocity=8.33m/s due north

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