All categories

4 years ago

An object at rest has no net force acting on it. True False

Physics

2 answers:

enot [183]4 years ago

6 0

Answer:

True

Explanation:

Unless acted by another force a body moving at constant velocity or at rest remains at that state. So, yes an object at rest has no net force acting on it. Only when another force is acted on the object the object will move. This property is known as inertia. When the body is at rest it is known as inertia of rest and inertia motion when it is moving.

aivan3 [116]4 years ago

5 0

Yes that's true according to newton's first law

You might be interested in

How do volcanoes above hot spots differ from volcanoes above subduction zones?

BARSIC [14]

C. Volcanoes above subduction zones have lava that is not basaltic.

3 0

3 years ago

Read 2 more answers

Because a bond is not very easily forgotten if you work well with the person then you will work or

SashulF [63]

Answer:

...

Explanation:

4 0

3 years ago

The Earthâ€™s orbit around the Sun is slightly elliptical. At Earth's closest approach to the Sun (perihelion) the orbital radiu

hichkok12 [17]

Answer:

1.25

Explanation:

3 0

3 years ago

70-kg man standing on a scale in an elevator notes that as the elevator rises, the scale reads 844 N. What is the acceleration o

mario62 [17]

Answer : The acceleration of the elevator is, $2.25m/s^2$

Explanation :

Formula used to calculate the acceleration of the elevator is:

$F=mg+ma\\\\ma=F-mg\\\\a=\frac{F-mg}{m}$

where,

F = force = 844 M

m = mass of man = 70 kg

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

a = acceleration of the elevator = ?

Now put all the given values in the above formula, we get:

$a=\frac{F-mg}{m}$

$a=\frac{844N-(70kg\times 9.8m/s^2)}{70kg}$

$a=2.25m/s^2$

Thus, the acceleration of the elevator is, $2.25m/s^2$

4 0

3 years ago

two idential train engines are parked on parallel track. one engine has ten cars attached and the other has no cars attached. ea

nikklg [1K]

Answer:

The second engine with no cars will accelerate more.

Explanation:

Since the engines are identical so they hacve the same mass. The first engine has 10 cars attached which adds more mass to it whereas second engine has no cars attached.

Therefore second engine is lighter in mass than the first one.

<u>We know from the Newton's second law of motion:</u>

$F=m.a$

$\therefore a=\frac{F}{m}$

Now, according to question both the engines exert same force for moving.

We see that :

$a\propto\frac{1}{m}$

So more is the mass, lesser is the acceleration, hence the second engine with no cars will accelerate more.

6 0

4 years ago