3 years ago

Calculate the accleration of a 25-Kg object that moved with force of 300 N

Physics

1 answer:

inysia [295]3 years ago

4 0

F=ma
a=F/m=300/25=12 m/s^2

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A car travels straight for 20 miles on a road that is 30 degrees north of east what is the east component of the cars displaceme

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Suppose you first walk 12.0 m in a direction 200 west of north and then 20.0 m in a direction 40.00 south of west. How far are y

Tpy6a [65]

Complete Question

The complete question is shown on the first uploaded image

Answer:

the compass direction of the resultant displacement is $\theta =4.7^o$ south of west

Explanation:

Generally using cosine we can obtain the resultant R as follows

$R^2 = A^2 + B^2 -2ABcos(70)$

=> $R = \sqrt{12^2 + 20^2 - 2(12 ) * (20) cos 70}$

=> $R = 19.48 \ m$

We can obtain the direction of the resultant by first using sine rule to obtain angle C as follows

$\frac{A}{sin C} = \frac{R}{sin70 }$

=> $C= sin ^{-1} [\frac{A * (sin 70)}{R} ]$

=> $C = sin ^{-1} [\frac{20 * (sin 70)}{19.48} ]$

=> $C = 74.7 ^o$

Then the direction is obtained as

$\theta = C - 70$

=> $\theta = 74.7 - 70$

=> $\theta =4.7^o$

Hence the compass direction of the resultant displacement is $\theta =4.7^o$ south of west

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3 years ago

The impulse given to a ball with massb of 2kg is 16 Ns. if the ball starts grin the rest, what is its final velocity?

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B because it will not be any thing else

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3 years ago

What are the forces that make an object move

Vaselesa [24]

There are many forces that make an object move.

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3 years ago

Assume the acceleration of the object is a(t) = −32 feet per second per second. (Neglect air resistance.) With what initial velo

alukav5142 [94]

Answer:

$v_i=189.315ft/s$

Explanation:

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Since <em>at maximum height the speed will be $v_f=0m/s$ </em>, the formula can be written as $v_i=\sqrt{-2ad}$ , which for our values is:

$v_i=\sqrt{-2(-32ft/s^2)(560ft)}=189.314553059ft/s=189.315ft/s$

Written to three decimal places.

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