3 years ago

Question 2

1 answer:

ra1l [238]3 years ago

4 0

Answer:

0.729 meters

Explanation:

d=(V0)t+(1/2)at^2

d=height of shelf

a=9.8 m/s^2 (acceleration due to gravity)

V0=0 m/s (initial downward velocity)

t=0.38586 seconds (1.173 meters/3.04 m/s)

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san4es73 [151]

Answer:

The average velocity is 2 m/s.

Explanation:

The velocity of the particle is the time derivative of its position $x(t):$

$v =\frac{dx(t)}{dt} = \frac{d}{dt}[t^2+2]$

$v =2t$

Now the average from $t=1$ and $t=2$ is

$v_{avg} = \dfrac{v(2)-v(1)}{2-1} = \dfrac{2(2)-2(1)}{1}$

$\boxed{v_{avg} = 2 m/s} \text{ ( If the units are m/s)}$

Thus, the average velocity is 2 m/s.

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4 years ago

Mariana [72]

Acceleration= v/ r
So you have to divide 700 by 0.800 which is equal to 875 m/s 2

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3 years ago

yan [13]

P + gh
14 + (9.8)(60) = 602kPa

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3 years ago

Nesterboy [21]

No voltage, no current. The battery provides potential difference(v) to the circuit. In case of no potential difference, theres no current.

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3 years ago

Tasya [4]

They are easy to use and more reliable

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3 years ago