Answer:
Explanation:
When the diver stands on the platform, at 20 m above the surface of the water, he has some gravitational potential energy, which is given as
E =mgh
where m is the man's mass, g is the gravitational acceleration and h is the height above the water. The moment he jumps, the gravitational potential energy starts decreasing, because its height h above the water decreases as well, and he acquires kinetic energy, which is given as
K.E = 1/2mv^2
where v is the velocity of the diver, which is increasing. When he touches the water, all the initial gravitational potential energy has been converted into kinetic energy.
Answer:
A. change activity.
Explanation:
Restiveness is the anxious feeling that a person has, an ill foreboding feeling of something to happen. It is the feeling or act of being impatient.
In a listening situation, if a speaker sees that his listeners are becoming restive, then he should try to change the activity he's doing. This will ensure that the listeners are not bored and impatient and it will divert the attention of the listeners. It will also provide relief or change in the interest of the listeners.
Thus, the correct answer is option A.
