The best answer would be C. Amplitude is the measure of the distance between the crest and the center of the line, or the distance between the trough and the center of the line (like wave height). High waves are a sea danger, especially to small ships and rowboats.
Answer:
Average velocity
Average speed,
Explanation:
(a)Average velocity
We have to find the average velocity. We know that velocity is defined as the rate of change of displacement with respect to time.
To find the average velocity we have to find the total displacement.
since displacement along east direction is 50m
and displacement along west=40m
so total displacement,
total time,
therefore, average velocity
(b)Average Speed:
Average speed is defined as the ratio of total distance to the total time
it means
Average speed= total distance/total time
here total distance,
and total time,
therefore,
Average speed,
Answer:
Explanation:
Even if it takes a great deal of energy to break the sound barrier, it still has to be accounted. Whatever the amount, what ever is left over will be what is delivered to one of the rotten villains the Flash will have to dispose of. Remember, they (for the most part) are human. He is not.
There are three ways an object can accelerate: a change in velocity, a change in direction, or a change in both velocity and direction.
Answer:
The force of friction is 2 N. The object isn't moving.
Explanation:
The frictional force on a object is given by it's normal force multiplied by the coefficient of static friction between the object and the surface. In this case since the surface is horizontal, the normal force is equal to the weight of the block with the oposite direction. So we have:
F_friction = 0.5*N = 0.5*(10) = 5 N
Since the friction force is oposite to force that's acting on the block and it's greater than that force, the object won't move and the real force will be the same as the applied force. So we have:
F_friction = 2 N