All categories

3 years ago

If the acceleration of a moving object is zero, which of the following best describes its motion

Physics

2 answers:

podryga [215]3 years ago

7 0

If the acceleration of a moving object is zero, the object remains at a constant speed (without friction)

Morgarella [4.7K]3 years ago

3 0

Answer:

Explanation:

According to the newton's second law, the force exerted on an object is equal to the product of the mass of the body and the acceleration of the body.

F = m x a

Where, F is the force and a be the acceleration and m be the mass of the body.

Acceleration is defined as the rate of change of velocity of the body.

As acceleration is zero, so

a = 0

v - u = 0

Where, v is the final velocity of the body and u be the initial velocity of the body.

It means the body is moving with uniform velocity.

You might be interested in

While standing on the edge of the grand canyon, you see a rattlesnake and scream. You hear the echo of the scream off canyon flo

bezimeni [28]

Answer:

1904 m

Explanation:

$\pink{\frak{Given}}\begin{cases} \textsf{ You scream after seeing a rattle snake .}\\\textsf{Scream is heard after 11.2 s .} \end{cases}$

Here we need to find out the depth of the canyon . When you will scream after seeing a snake , the sound produced will travel till the end of the canyon and after hitting the end , it will travel back to you .

So if the depth of the canyon is d (say) , then the total distance travelled by the sound wave will be d + d = 2d .

And we know that the speed of the sound is approximately 340m/s in air , so we can use the formula distance = speed * time to calculate the depth of the canyon . So ,

$\sf \longrightarrow Distance = (Speed)(Time) \\$

$\sf \longrightarrow 2d = 340m/s * 11.2 s\\$

$\sf \longrightarrow d = \dfrac{340m/s * 11.2s}{2} \\$

$\sf \longrightarrow \boxed{\bf Depth_{canyon}= 1904m }\\$

6 0

2 years ago

Define in own words.

professor190 [17]

A recurring illness or an illness that lasts for a long time. Chronic illnesses are typically very hard to cure.

8 0

3 years ago

At the start of his race, an 81-kg runner pushes against the starting block, exerting an average force of 1600 N . The force tha

balandron [24]

The force in the horizontal direction is given by 1600cos(20)=1503.5N
Given the mass of m=81kg, we can use F=ma to get acceleration
F/m=a
a=1503.5/81=18.56m/s²
The velocity is given by the integral of the acceleration, V=18.56t m/s
since t=0.28s we get
v=18.56(0.28)=5.197m/s

3 0

3 years ago

16 points and brainiest whoever is right

masha68 [24]

Let k be the spring constant. Then you have
188=k*21.8
k=188/21.8=8.62,
In the second part you use
m g= k x
x=m g/k= 38/8.62=4.4cm

4.4 cm is the answer

6 0

3 years ago

a force of 30 N is exerted on cart there is no friction the acceleration of the cart is 6 m/s^2 find the mass of the cart

Greeley [361]

Here we would use the equation
$f = m \times a$
When we sub in we would would write it as
$30 = m \times 6$
you would the solve the equation for an answer of 5

8 0

3 years ago