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2 years ago

a motorcycle accelerates from 15 m/s to 20 m/s over a distance of 50 meters. what is its average acceleration?

Physics

1 answer:

IRINA_888 [86]2 years ago

8 0

Vi=15m/s
vf=20m/s
d=50m

a=(vf²-vi²)/2d

average acceleration= 1.75m/s

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I looked up the question and got D- a vacuum

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2 years ago

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3 years ago

A typical cell phone charger is rated to transfer a maximum of 1.0 Coulomb of charge per second. Calculate the maximum number of

Alexandra [31]

Answer:

The maximum no. of electrons- $2.25\times 10^{22}$

Solution:

As per the question:

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Thus the charge flow in 1. 0 h:

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Maximum number of electrons, n is given by:

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where

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3 0

3 years ago

The magnitude of the velocity vector of the car is ∣∣v→∣∣ = 78 ft/s. If the vector v→ forms an angle θ = 0.09 rad with the horiz

kotegsom [21]

Answer:

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Explanation:

The x- and y- components of the velocity vector can be written as following:

$\vec{v}_x = ||\vec{v}||\cos(\theta)\^i$

$\vec{v}_y = ||\vec{v}||\sin(\theta)\^j$

Since the angle θ and the magnitude of the velocity is given, the vector representation can be written as follows:

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2 years ago

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jok3333 [9.3K]

Answer:

$\frac{\rho_S}{\rho_L} = \frac{2}{3}$

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then,

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so, the ratio of densities of solid and and the liquid is 2/3

7 0

3 years ago