Newton's second law states that the force applied to an object is equal to the product between the mass m of the object and its acceleration a:

Using

and

, we can find the value of the force applied to the roller-blade to obtain this acceleration:
Answer: the weight would be 4.6 (I think i don’t know))
Explanation:
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Answer:</h2>
He saves 13.2 minutes
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Explanation:</h2>
Hey! The question is incomplete, but it can be found on the internet. The question is:
How many minutes did he save?
Let's call:

We know that the 135 miles are on the interstate highway where the speed limit is 65 mph. From this, we can calculate the time it takes to drive on this highway. Assuming Richard maintains constant the speed:

Today he is running late and decides to take his chances by driving at 73 mph, so the new time it takes to take the trip is:

So he saves the time
:

In minutes:

Answer:
The answer is 70 cm
Explanation:
If you add All the numbers together, you receive an 55 cm then you add 15 because the points on the diagram also count.