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sammy [17]
3 years ago
14

Dave runs a 400 m race with a speed of 4 m/s. What time will it take him to finish the race?

Physics
1 answer:
tangare [24]3 years ago
5 0

Answer:

The answer should be 100 if not try 200

Explanation:

d=v x t

400m=4m/s x t

/4           /4

100=t

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klasskru [66]

Answer:

Online means connected to a network.

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4 0
2 years ago
Read 2 more answers
An object of mass m is initially at rest. After a force of magnitude F acts on it for a time T, the object has a speed v. Suppos
adell [148]

Answer:

It takes \frac{1}{2}T to accelerate the object from rest to the speed v.

Explanation:

From Newton's second law:

F=m\cdot a  (1)

and the definition of acceleration,

\displaystyle{a = \frac{\Delta v}{\Delta t}} (2)

we can solve this problem. Putting (2) in (1) we have:

\displaystyle{F = m\cdot \frac{\Delta v}{\Delta t}} and solving for \Delta t and considering the initial time as zero (t_0=0) and the initial velocity also zero (v_0=0) we have:

\displaystyle{T=\frac{mv}{F}}

Now, for a mass m^*= 2m and the F^*=4F we can wrtie the same equation:

\displaystyle{T^*=\frac{m^*v}{F^*}} and substituting m^* and F^*:

\displaystyle{T^*=\frac{2m\cdotv}{4F}=\frac{2}{4}T=\boxed{\frac{1}{2}T}}

So now, it only takes half the time to accelerate the object from rest to the speed v

5 0
3 years ago
The difference between a nuclear weapon detonation and a conventional explosion is __________.
viktelen [127]
Fission. In a nuclear explosion the atom nucleus splits, not in a conventional explosion
3 0
3 years ago
Hypothesis what is it
Naya [18.7K]

Explanation:

hope it helps.

<h3>stay safe healthy and happy.</h3>

7 0
3 years ago
A firm current ratio is 1. 0 and its quick ratio is 1. 0. If current liabilities are 12300, what are its inventories?
Anna007 [38]

A firm current ratio is 1. 0 and its quick ratio is 1. 0. If current liabilities are 12300 then its inventories will be 12300

Inventory is the accounting of items, component parts and raw materials that a company either uses in production or sells

The quick and current ratios are liquidity ratios that help investors and analysts gauge a company's ability to meet its short-term obligations. The current ratio divides current assets by current liabilities. The quick ratio only considers highly-liquid assets or cash equivalents as part of current assets.

current ratio = current assets / current liabilities

current assets = current ratio  * current liabilities

                        = 1 * 12300 = 12300

since , inventory is a current asset for accounting purpose , hence inventories will be 12300

To learn more about current ratios

brainly.com/question/19579866?referrer=searchResults

#SPJ4

4 0
2 years ago
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