Physics, 17.12.2020 17:20 Courtneymorris19

If a book with a mass of 5.0 kg, is pushed across a table with a net force of 30. N, what is its acceleration?

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Answer from: 1r32tgy5hk7

$a=6\ m/s^2$

Explanation:

Given that,

Mass of a block, m = 5 kg

It is pushed with a net force of 30 N

We need to find its acceleration. The net force acting on an object is given by :

F = ma

a is the acceleration of the block

$a=\dfrac{F}{m}\\\\a=\dfrac{30\ N}{5\ kg}\\\\a=6\ m/s^2$

So, the acceleration of the block is $6\ m/s^2$ .

Answer from: Quest

Texture and composition are different because they are not the same aspect. texture has to do with feel and so on, where as composition is the chemical makeup which you cant touch like you can texture.

Answer from: Quest

force is based upon mass and acceleration.the statement is not always true.

it can be explained from newton's second law of motion.

as per newton's second law of motion the rate of change of momentum is directly proportional to the applied force and takes place along the direction of force.

mathematically it can be written as -

$f\alpha \frac{dp}{dt}$

⇒ $f= k \frac{dp}{dt}$

here k is the proportionality constant whose value is 1.

$f=\frac{dp}{dt}$

$f= \frac{d[mv]}{dt}$

$f= m\frac{dv}{dt} +v\frac{dm}{dt}$

$f=ma+v\frac{dm}{dt}$ [a is the acceleration=dv/dt]

hence we see that force not only depends on mass and acceleration but also on velocity and rate of change of mass. force f will depend on mass and acceleration only when mass is constant.

hence the statement that force is based upon mass and acceleration is false.

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If a book with a mass of 5.0 kg, is pushed across a table with a net force of 30. N, what is its acc...

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