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ikadub [295]
4 years ago
9

what is newton's second law of motion? forces are balanced when they are equal and opposite. an object at rest or in motion will

remain at rest or in motion unless acted upon by an unbalanced force. the smaller the mass of an object, the greater the acceleration of that object when a force is applied. the greater the force applied, the greater the acceleration. every reaction is equal to the force applied.
Physics
2 answers:
Troyanec [42]4 years ago
6 0
The smaller the mass of an object, the greater the acceleration of that object when a force is applied because mass and acceleration are inversely related The greater the force applied, the greater the acceleration as Force and acceleration are directly related quantities.
sleet_krkn [62]4 years ago
5 0

Answer:

B

Explanation:

The Newton's second Law of motion states that:

- An object at rest or in motion will remain at rest or in motion unless acted upon by an unbalanced force.

- The expression is given by:

                                   F_net = m*a

- If F_net  = 0, then a = 0.

- However, if a = 0, not always is velocity is zero but the change in velocity is.

Hence, the object in motions travels with a constant velocity even if all the forces are balanced or no net force is present.

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What is the least value of an ammeter <br>Is it 1. 0.1<br>2. 0.10<br>3. 0.2<br>4. 0.5​
givi [52]

The least value varies depends on ammeter range. In the given question, ammeter range is not mentioned. So, the least value of an ammeter is 0.1 or 0.5 (depends on ammeter range).

<u>Explanation:</u>

The least value of an ammeter is the measure of the smallest number which can be observed in ammeter. So the least value will be varying depending upon its range. If we consider the range of ammeter is 30 A and the scale readings are 10 numbers, then the least value will be 30/10 = 3 A per scale.

So the least value is determined as \frac{Range of ammeter}{No.of scales}

So among the given options 0.1 is most suitable for an ammeter with range of 3 A with 30 divisions.

3 0
3 years ago
Which of newtons laws accounts for the following statement " Negative acceleration is proportional to applied braking force "
fenix001 [56]
I believe that would be his second law!
4 0
4 years ago
What is the force when an object exerts 15 pascal pressure on a square surface of side 5 meters
olga55 [171]

Answer:375N

Explanation:

pressure =15 pascal

Length of side =5 m

Area=length x length

Area=5 x 5

Area=25 m^2

Force=pressure x area

Force=15 x 25

Force=375N

3 0
4 years ago
Sam heaves a 16lb shot straight upward, giving it a constant upward acceleration from rest of 35 m/s^2 for 64.0 cm. He releases
makvit [3.9K]

Answer:

6.69 m/s

4.483 m

1.42s

Explanation:

Given that:

Initial Velocity, u = 0

Final velocity, v =?

Acceleration, a = 35m/s²

1.) using the relation :

v² = u² + 2as

v² = 0 + 2(35) * 64*10^-2m

v² = 70 * 0.64

v = sqrt(44.8)

v = 6.693

v = 6.69 m/s

B.) height from the ground, h0 = 2.2

How high ball went , h:

Using :

v² = u² + 2as

Upward motion, g = - ve

0 = 6.69² + 2(-9.8)*(h - 2.2)

0= 6.69² - 19.6(h - 2.2)

44.7561 + 43.12 - 19.6h = 0

19.6h = 44.7561 - 43.12

h = 87.8761 / 19.6

h = 4.483 m

C.)

vt - 0.5gt² = h - h0

6.69t - 0.5(9.8)t²

6.69t - 4.9t² = 1.83 - 2.2

-4.9t² + 6.69t + 0.37 = 0

Using the quadratic equation solver :

Taking the positive root:

1.4185 = 1.42s

5 0
3 years ago
Please help with number 5
Lera25 [3.4K]

Answer:

a.)

Explanation:

a.) is the only possible answer because it is in m/s^2 which are the units for acceleration, and you already know the magnitude of acceleration will be 5 given the other options.

5 0
3 years ago
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