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2 years ago

How are acceleration and velocity related

Physics

1 answer:

IRINA_888 [86]2 years ago

5 0

Answer:

answer is C

Explanation:

acceleration is rate of changing velocity in a time

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The lever which makes our work easier only by accelerating the rate of work is:

ladessa [460]

Answer:

power

Explanation:

it helps to do work without power we cant do any things

8 0

3 years ago

If x2 = 60, what is the value of x? plus or minus square root 30 plus or minus square root 60 ±30 ±120

Zielflug [23.3K]

X2 = 60
/ 2 / 2
x = 30
Plus or minus square root 60

4 0

3 years ago

What is an observation in an experiment ?

Elza [17]

<span>In science, </span>observation<span> can also involve the recording of data via the use of scientific instruments. The term may also refer to any data collected during the scientific activity.

Hope this helps,

kwrob</span>

4 0

3 years ago

A person walks out of a store with a pillow at the top of an overflowing shopping cart. While walking to the car, the cart's whe

Mashutka [201]

The pillow will continue to go forward as Newton's first law states that an object will continue in it's path unless another force acts upon it

7 0

3 years ago

The student in item 1 moves the box up a ramp inclined at 12 degrees with the horizontal. If the box starts from rest at the bot

Alik [6]

Answer:

Acceleration up the ramp = -2.745 m/ $s^{2}$

Explanation:

Given

box is pulled at angle Θ = $25^{o}$

Force applied F = 185N

coefficient of friction, μ $_{k}$ = 0.27

mass of the box m = 35 kg

We know that,

acceleration due to gravity g = 9.8 m/ $s^{2}$

horizontal component $F_{x}$ = F cosΘ = 185 * cos $25^{o}$ =167.67

vertical component $F_{y}$ = F sinΘ =185*sin $25^{o}$ = 78.18

Another vertical component is due to gravity $F_{g}$ , force in given by

$F_{g}$ = mg

= 35 x 9.8

= 343.35 N

Normal force $F_{n}$ = $F_{g}$ - $F_{y}$

= 343.35 - 78.18

= 265.17 N

Frictional force $F_{k}$ = $F_{n}$ * μ $_{k}$

= 265.17 * 0.27

= 71.596 N

To find acceleration, we know that,

force = mass x acceleration

acceleration = $\frac{force}{mass}$

Here force is the summation of frictional force and horizontal component of the applied force. These force act in opposite directions.

force = $F_{k}$ - $F_{x}$

= 71.596 - 167.67

= -96.074

acceleration = $\frac{-96.074}{35}$

= -2.745 m/ $s^{2}$

6 0

3 years ago