Question

2. One km/h is equivalent to
... m/s.
(b) 3600/60
(c) 5/18
(d) 5/9
The distance (s) in metres travelled by a particle is related to time (t) in seconds by the equation of motion,
(a) 18/5
(d) 5 ms-1
S = 5t + 10t. What is the initial velocity of the body ?​

Answer 1

Answer:

Explanation:

Yes , 1km/hr = 5/18 m/s

Proof : 1km = 1000m and 1 hr= 60x60 sec = 3600 sec

So 1km/hr = 1000m/3600s = 10/36 m/s = 5/18 m/s

So we can generalize this as x km/hr= 5x/18 m/s

Hope this helps.☺

Answer 2

1 km = 1000 m; 1 hr = 3600 sec.

The distance (x) in meters travelled by a particle is related to time (t) in seconds by the equation of motion x = 10t + 4t2.