An object falls freely from rest near the surface of the earth. what is the speed of the object when it has fallen 4.9 meters from its rest position?
a) 4.9m/s
b) 96 m/s
c) 9.8 m/s
d) 24m/s
i know that it is letter "c" but i don't know why.

In what direction does the medium move relative to the direction of the wave? explain.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

In a set amount of time, a battery supplies 25j of energy to an electric circuit that includes two different loads. one of the loads produces 10 j of heat energy during this time interval. how much heat energy is produced by the second load in this time? explain your answer