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loris [4]
3 years ago
11

HELP PLS!!!! Light travels approximately 982,080,000 ft/s, and one year has approximately 32,000,000 seconds. A light year is th

e distance light travels in one year.
State the speed in ft/s, using scientific notation.

3.069 x 101 ft/s
9.8208 x 108 ft/s
3.0 x 1016 ft/s
Physics
1 answer:
maw [93]3 years ago
6 0

You've already told us the speed in ft/s .  It's right there in the question.  You said that light travels about  982,080,000 ft/s.

We don't know how accurate that number is, but for purposes of THIS question, that's the number we're going with.

In scientific notation, it's written . . . <em>9.8208 x 10⁸ ft/s .</em>

We don't know where you were going with the number of seconds in a year.  But to answer the question that you eventually asked, it turned out that we don't even need it.

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If a 5.5 kg object experiences 15 N of force for .15 seconds what is the speed change
Nady [450]

The speed change : Δv = 0.41 m/s

<h3>Further explanation</h3>

Given

mass = 5.5 kg

Force = 15 N

time = 0.15 s

Required

the speed change

Solution

Newton 2nd's law

Impulse and momentum

F = m.a

F = m . Δv/t

F.t = m.Δv

Input the value :

15 N x 0.15 s = 5.5 kg x Δv

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8 0
2 years ago
Alexis walked 1.5 km to her house in 0.5 hours. What is Alexis’ speed?
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Answer:

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Explanation:

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Distance = 1.5 [km] = 1500 [m].

time = 0.5 [hr] = 1800 [s]

Speed = Distance/time

Speed = 1.5/0.5

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4 0
2 years ago
The exact speed of an object in a specific instant is?
GarryVolchara [31]
Im not so sure but it should be the
instantaneous speed 

3 0
3 years ago
Read 2 more answers
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