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sineoko [7]
4 years ago
9

A dog has a mass of 20 kg. If the dog is pushed across the ice with a force of 40 N, what is its acceleration?

Physics
1 answer:
olasank [31]4 years ago
7 0

Answer:

The acceleration is 2 m/s2.

Explanation:

We calculate the acceleration (a), with the data of mass (m) and force (F), through the formula:

F = m x a  ---> a= F/m

a = 40 N/20 kg                   <em>  1N= 1 kg x m/s2</em>

a= 40 kgx m/s2/ 20 kg

<em>a= 2 m/s2</em>

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Newton’s second law relates an object’s acceleration to its mass and the net force acting on it. Does newton’s second law apply
alexgriva [62]

No, newton’s second law does not apply to a situation in which there is no net force.

<h3>What is force?</h3>

A force is a push or pull upon an object which stops or tends to stop the object and move or tends to move an object.

No, newton’s second law apply to a situation in which there is no net force because force compels the object to move in the direction in which force is applied so we can conclude that force is compulsory to move an object.

Learn more about force here: brainly.com/question/12970081

3 0
3 years ago
I need help with this, I can't figure it out.
Softa [21]

Answer:

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  3. <u>2,3,2,4</u>.
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Explanation: You're welcome ✓

5 0
3 years ago
A navy diver hears the underwater sound wave from an exploding ship across the harbor. They immediately lift their head out of t
tamaranim1 [39]

Answer:

s = 1800 m = 1.8 km

Explanation:

The distance, the speed, and the time of reach of the sound are related by the following formula:

s = vt

where,

s = distance

v = speed

t = time

FOR WATER:

s = v_wt ---------------------- eq (1)

where,

s = distance between ship and diver = ?

v_w = speed of sound in water = 1440 m/s

t = time taken by sound in water

FOR AIR:

s = v_a(t+4\ s) ---------------------- eq (2)

where,

s = distance between ship and diver = ?

v_a = speed of sound in water = 344 m/s

t + 4 s = time taken by sound in water

Comparing eq (1) and eq (2),because distance remains constant:

v_wt=v_a(t+4\ s)\\\\(1440\ m/s)t = (344\ m/s)(t+4\ s)\\(1440\ m/s - 344\ m/s)t=1376\ m\\t = \frac{1376\ m}{1096\ m/s}

t = 1.25 s

Now using this value in eq (1):

s = (1440\ m/s)(1.25\ s)

<u>s = 1800 m = 1.8 km</u>

4 0
3 years ago
Do animals fart and do all animals blink and do animals have the same trait of humans
pantera1 [17]
Uh yes they do fart and blink. Like very living person, and animal. They do have the same traits, as that to humans, but their biology is set up differently. They are stronger and quicker.
I'm not going to state that humans are animals, because I don't agree. Humans are NOT animals!!! But that's my belief, oppose as you like.
I think the best way to answer this question, is to imagine being an animal. Possibly a wild animal. What do you do? How do you find food? Where do you sleep? See, usually humans know how to be disgusted about living in unsanitary and unsafe environments. I mean looking at the traits, they're biology is just set up differently from humans.

I hope this helps.<span />
8 0
4 years ago
Read 2 more answers
A sailboat is traveling across the ocean with a speed of 4 m/s when large gusts of wind pick up that starts to accelerate the sa
Ivahew [28]

solution:

Using Cartesian co-ordinate system

Final velocity =v= -4m/s

Initial velocity = u

Acceleration a = m/s²

Time (t).= 60s

By the first kinematical equation

V= u +at

U = v – at

=(-4)-(-3)(60)

176m/s

So, initial velocity was 176m/s


8 0
4 years ago
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