D) The speed of a wave slows as it travels at different speed in different media.
If it's a distance graph, then it's a constant speed.
Answer:
3.71 m/s
Explanation:
From the law of conservation of linear momentum, since we are neglecting minor energy losses due to friction then we can express it as
since all the potential energy is transformed to kinetic energy
Making v the subject of the formula then
and here m is the mass of the block, g is acceleration due to gravity, h is the height. Substituting 0.7 m for h and 9.81 for g then we obtain that
The answer is Prove a hypothesis
Drinking more water or other fluids