D. you develop positive interactions with your peers
The average velocity of Alyse is 0 m/s.
<h3>What is the average velocity of an object or a person?</h3>
The average velocity of a person is the average of all the velocities of moving as it moves.
Velocity on its own is the ratio of the displacement of a body and the time taken for that displacement.
Mathematically:
- Average velocity = total displacement / time taken
Displacement is a vector quantity that measures the distance traveled by a moving body in a specific direction.
Hence, average velocity and velocity are both vector quantities.
Displacement takes a measure of the shortest possible distance along a straight line from the beginning of the motion until the end of the motion.
Calculating the average velocity of Alyse:
Assuming the initial direction is positive and n=backeard direction is negative:
Total displacement = 20 m + - (20 m)
Total displacement = 0 m
total time = 3 minutes
Average velocity = 0 m/ 3
Average velocity = 0 m/s
Learn more about average velocity at: brainly.com/question/4931057
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What is the speed of a wave if it is 8 meters long and has a frequency if 3 hz?
the answer is 24 m/s
Part a)
kinetic energy of the hammer will be

here we know that
m = 4 kg
v = 6 m/s
now by the equation of kinetic energy we have


Part b)
for finding the force we will have

here we know that



now from above equation we have


now by Newton's II law we have


so it requires 720 N.