Use the formula f = m•a and rearrange it to solve for a.
f = m•a
a = f/m
a = 200 N/ 80Kg
a = 2.5 m/s
therefore the acceleration of the skier down the slope is 2.5 m/s.
Answer:
Explanation:
The relationship of between fundamental frequency, density of the string, length and tension of the string is:
where L/m is the linear density.
make F the subject of the formula
substitute the values
a. distance: 10 km
The distance covered is equal to the sum of the distance of each part of the journey.
In this case, Sarah's trip consists of three parts:
- 2 km north from the house to the grocery store
- 3 km north to grandma's house
- 5 km back to reach home
So the distance covered is the sum of all these parts:
d = 2 km + 3 km + 5 km = 10 km
b. displacement: 0
Instead, displacement is defined as the distance (measured in a straight line) between the final point of the motion and the initial point of the motion. So displacement does not depend on the path taken by the object, but only on the final and initial position.
Here we have:
- Final position of Sarah's journey: home
- Initial position of Sarah's journey: home
So, the displacement is zero, because the final point corresponds to the initial point.
Missing an attached sheet with the sound waves. Please add the attached sheet so I can properly help.
Thanks! :D