Answer:
Graph 1 matches with B, 2 with A, and 3 with C.
Explanation:
Graph 2 shows a car whose distance part of the graph is not going up or down, while the time going up. That means that the car is stopped. Graph 1 shows a straight line, meaning that the car is traveling at a constant speed. Graph 3 is a curved line, meaning the speed of the car is changing somehow, and since the line is becoming more horizontal, the car is getting slower.
Answer:

Explanation:
Given
--- Wavelength
--- Period
Required
Determine the velocity of the wave
This is calculated using:





<em>Hence, the velocity is 0.25m/s</em>
Answer:
1440 W
Explanation:
First of all, we can find the total displacement of the sled, which is given by

where
a = 0.08 m/s^2 is the acceleration
t = 1 min = 60 s is the time
Substituting,

Now we can find the wotk done on the sled, equal to the product between force and displacement:

And finally we can fidn the average power, which is the ratio between the work done and the time taken:

In a completed free body diagram, the diagram should show the magnitude and direction of the body's motion.