Question

suppose you walk across a room of length 9m and velocity 1.5 kmph. express the velocity in m/s and find the time you will take to move across the room.

Answer 1

heya dear.. your answer is here
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speed = 1.5km/h = 1.5×5/18= 7.5/18=0.417m/s

time =dist/speed
= 9/7.5/18
=(9*18)/7.5
= 21.6 second
hope it helps

Answer 2

Answer:

Time, t = 22 s

Explanation:

Length of the room, l = 9 m

Velocity, v = 1.5 km/h

Converting km/h to m/s.

$v=\dfrac{1.5\times 1000}{60\times 60}=0.41$

Speed = distance / time

$t=\dfrac{distance}{speed}$

$t=\dfrac{9}{0.41}$

t = 22 seconds

The time taken to move across the room is 22 s.