Answer:
Explanation:
The kinetic force of friction is:
Before calculating work, it is require to determine if force exerted on the crate is enough to move it at least. The equation of equilibrium for the crate is:
The acceleration experimented by the crate is:
This positive result indicates that motion is physically reasonable. Hence, the work done by the force of friction is:
Answer:
Distance covered by Neva = 300 m
Displacement of Neva = 0 m
Explanation:
Given:
Length of the pool = 50 meter
Number of laps Neva swam = 3
1 lap is to swim to the other side and back.
To find the distance and displacement.
Solution:
To calculate the distance swum by Neva we will find the total length covered by Neva in 3 laps.
1 lap is 50 meters to the other side and 50 meters back
So, the length of 1 lap =
Total length of 3 laps =
To calculate the displacement we will find the distance between initial position and final position.
We, see that on completing 3 laps Neva returns to her starting point. Thus the initial and final position are the same. Do, the distance between initial position and final position will be = 0 m
Distance covered by Neva = 300 m
Displacement of Neva = 0 m
<h2>
Law 1:</h2><h3>An object already in motion stays in motion, unless acted upon by a force.</h3><h3 /><h2>Law 2:</h2><h3>
</h3><h3>f = forces on an object</h3><h3>m = mass of that object</h3><h3>a = acceleration of that object</h3><h3 /><h2>Law 3:</h2><h3>Everything has an equal and opposite reaction.</h3><h3 /><h3>Hope this helps!</h3>