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2 years ago

Please help answer questions 1-4. Show your work.

Physics

1 answer:

Vera_Pavlovna [14]2 years ago

7 0

1) V = a × t, where v is the velocity, a is the acceleration and t is the time

2) Vf - Vi = a × t

So 1.3 - 1.1 = a × 20

a = 0.01 m/s²

3) Vf - Vi = a × t

0 - 2 = a × 3

a = -2/3 m/s²

4) If an object is slowing down, the acceleration is negative and vice versa.

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Gnom [1K]

Answer:

$t=2.5\times 10^{-14}\ s$

Explanation:

We know that charge on electron

$q=1.6\times 10^{-19}\ C$

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We know that mass of electron

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a= F/m

$a=\dfrac{5.67\times 10^{-11}}{9.1\times 10^{-31}}\ m/s^2$

$a=6.2\times 10^{19} m/s^2$

$S=ut+\dfrac{1}{2}at^2$

initial velocity given that zero ,u=0

$20\times 10^{-9}=\dfrac{1}{2}\times 6.2\times 10^{19} t^2$

$t=\sqrt {\dfrac{40\times 10^{-9}}{6.2\times 10^{19}}}$

$t=2.5\times 10^{-14}\ s$

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3 years ago

Match each media portrayal with the type of behavior the media portrayal is

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I notice that even though we're working with frames of reference
here, you never said which frame the '5 km/hr' is measured in.

In fact ! You didn't even say which frame the '12 km/hr' of his
bike is measured in.

So there are several different ways this could go. I'll do it the way
I THINK you meant it, but that doesn't guarantee anything.

-- Simon is riding his bike at 12 km/hr relative to the sidewalk,
away from Keesha.

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I am Lyosha [343]

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2 years ago

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