Un móvil se desplaza con MRU. Calcular su velocidad, en km/hr, si recorre 742 yardas en 360 minutos.

Given :

Distance travelled, d = 742 yards.

Time taken to cover 742 yards, t = 360 minutes.

To Find :

The speed in km/h.

Solution :

We know, 1 yard = 9.14 × 10⁻⁴ m.

So, 742 yards = 0.678 km.

Also, 360 minutes = 6 hours. ( 1 hour = 60 minutes )

So, speed in km/hr is given by :

Hence, this is the required solution.

force is mass*acceleration.

we have a very small mass: 11.4*0.001 kg

if we want 0.035n of force, we need an acceleration:

0.035 = 11.4*0.001*a

a = 0.035/(11.4*0.001) m/s^2

magnets not strong enough

explanation: