Answer:
acid rain
Explanation:
cause it desolved in slow ways
Answer:
Option C
100 J
Explanation:
Kinetic energy, KE is given by
where m is the mass and v is the velocity
Substituting 50 Kg for mass, m and 2 m/s for velocity v then we obtain

Therefore, the child's kinetic energy is equivalent to 100 J
Hard surfaces reflect sound back into the room, while carpets help to absorb the sound so it reflects less
Different elements require different levels of energy to make or break a bond