Toon train is traveling at the speed of 10 mi./s at the top of a heel five seconds later it reaches the bottom of the hill and is moving at 30 mi./s what is the rate of acceleration of toon train?

4 m/s2

Explanation:

30 m/s - 10 m/s = 20 m/s ÷ 5 s = 4 m/s2

d) physical means can be used to separate the components of air.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it