Suppose you walk accross a room of length 9 metres with the velocity of one and a half Km per hour. Express this velocity in m/s and find the time you will take to.move accross the room
Velocity = 3/2 km/h
Concert into m/s = 3/2×5/18= 5/12
Distance travelled = 9m
Time = Distance / Velocity
= 9/5/12
= 9 × 12 / 5 =21.6sec.
1.5 km/h is pretty slow walking.
It is 1500 m in 3600 s, which is 0.417 m/s.
Time = Distance/Speed
Divide 9 meters by 0.417 m/s for your answer, in seconds.
21.582sec
To begin, let's convert the given velocity from kilometers per hour (km/h) to meters per second (m/s).
We know that 1 kilometer is equivalent to 1000 meters, and 1 hour is equal to 3600 seconds. Therefore, to convert km/h to m/s, we can use the following conversion factor:
1 km/h = (1000 m) / (3600 s)
Now, let's calculate the velocity in meters per second:
Velocity (m/s) = (1.5 km/h) * (1000 m) / (3600 s)
= 1500 m / 3600 s
= 5/12 m/s
The velocity is approximately 0.417 m/s.
To find the time it will take to cross the 9 meter room, we can use the equation:
Time = Distance / Velocity
Plugging in the values:
Time = 9 m / (5/12 m/s)
= 9 m * (12/5 s/m)
= 108/5 s
The time it will take to cross the room is approximately 21.6 seconds.