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4 years ago

A car accelerates uniformly from rest to a speed of 6.6 m/s in 6.5 s. Find the distance the car travels during this time.

Physics

2 answers:

andrew11 [14]4 years ago

6 0

It traveled 39.6 meters

stiks02 [169]4 years ago

3 0

Answer:

Distance covered by the car, s = 21.56 meters

Explanation:

Given that,

Initially, the car is at rest, u = 0

It reaches a speed, final speed, v = 6.6 m/s

Time, t = 6.5 s

We need to find the distance covered by the car during this time. Firstly, we can find the acceleration of the car using equation of motion as :

$v=u+at$

$6.6=0+a\times 6.5$

$a=1.01\ m/s^2$

Now using third equation of motion to find distance (s) as :

$s=\dfrac{v^2-u^2}{2a}$

$s=\dfrac{(6.6)^2}{2\times 1.01}$

s = 21.56 meters

So, the distance traveled by the car during 6.5 seconds is 21.56 meters. Hence, this is the required solution.

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Answer:

Answer to the question:

Explanation:

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3 years ago

Which type of evidence was used to tie Ted Bundy to the murder of Lisa Levy?

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2 years ago

The distance between Earth and Mars is 225 million km. When converted using the conversion factor 1 AU = 1.5 × 108 km, the dista

SIZIF [17.4K]

I guess the problem is asking for the distance between Earth and Mars in Astronomical Units (AU).

Since $1 AU = 1.5 \cdot 10^8 km$
and the distance between the two planets is
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we can convert this distance into AU by using the following proportion:
$1 AU : 1.5 \cdot 10^8 km = x : 2.25 \cdot 10^8 km$

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3 years ago

Read 2 more answers

The half-life of uranium-235 is 713 million years. Suppose a rock originally had 26 grams of uranium-235. A geologist had the ro

BlackZzzverrR [31]

Answer:

<h3>2139 Million years</h3>

Explanation:

Half life of a material is the time required for the material to decay into half of initial amount.

initially there is 26 grams of uranium-235, and the final amount is 3.25 gram

ratio between initial and final amount = $\frac{26}{3.25} = \frac{1}{8}$

now it is clear that the material have halved 3 times from initial condition

number of half lives passed = 3

number of half lives passed can also be found using the equation

no of half lives = $log_{2} \frac{R_{0} }{R}$

where $R_{0}$ is the initial amount of material and R is the final amount

∵ Number of half lives = $log_{2} \frac{26 }{3.25}$

= 3

So, age of rock = half-life X number of half-lives passed

=713000000 X 3

= 2139000000

=2139 Million Years

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3 years ago

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3 years ago