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Delvig [45]
3 years ago
5

A 1000 kg car moves as speed from 10 m/s to 30 m/s in 20 seconds. What is the average speed ? What is the acceleration ? What is

the average force acting upon it ? If the car turns along a circle at speed 5 m/s around a curve 30 meters in radius , how big the centripetal force is needed ?
Physics
1 answer:
8_murik_8 [283]3 years ago
6 0

Answer: divide

Explanation:

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How is the gravitational force acting on a falling object calculated
sattari [20]

F=ma

So go for option C

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5 0
2 years ago
A proton is released in a uniform electric field, and it experiences an electric force of 2.36×10−14 N toward the south. (a)What
qwelly [4]

Answer:

a) E = 1.47 × 10^5 N/C

b) south

Explanation:

The magnitude of an electric field can be defined mathematically as;

E = F/q ........1

Where,

E = magnitude of the electric field

F = electric force

q = charge on the proton

Given;

F = 2.36 × 10^-14 N

Note that charge on a proton is known as Qp = 1.602 × 10^-19 C

q = 1.602 × 10^-19 C

Substituting into equation 1, we have;

E = 2.36 × 10^-14 N/1.602 × 10^-19 C

E = 1.47 × 10^5 N/C

b) The direction of the electric field;

From equation 1

E = F/q ........1

since both electric field and electric force are vector quantity and q is a positive charge (constant), then both the electric field and electric force would be parallel to each other. Therefore the electric field is directed to the south also.

(When a vector is multiplied by a positive constant the direction remains the same)

7 0
3 years ago
one layer of earth's atmosphere is called the stratosphere. At one point above earth's surface the stratosphere extends from an
masya89 [10]

According to all the given requirements 

stratosphere x starts at an altitude of 16 km

that means  

<span>16≤x

</span> and,as given ,stratosphere ends at an altitude of 30 km:
which means
<span>x≤30</span> combining both of them we get

<span>16≤x≤30</span> So the range of the stratosphere is from 16 to 30 km. 

8 0
3 years ago
Read 2 more answers
A fisherman has caught a very large, 5.0kg fish from a dock that is 2.0m above the water. He is using lightweightfishing line th
agasfer [191]

Answer:

t = 2 s

Explanation:

As we know that fish is pulled upwards with uniform maximum acceleration

then we will have

T - mg = ma

here we know that maximum possible acceleration of so that string will not break is given as

T = 54 N

now we have

54 - (5 \times 9.8) = 5 a

a = 1 m/s^2

now for such acceleration we can use kinematics

d = \frac{1}{2}at^2

2 = \frac{1}{2}(1) t^2

t = 2 s

7 0
3 years ago
Which is the best example of Newton's Second Law of Motion? (1 point) Select one: a. A student has on roller skates and she deci
slava [35]
D, I believe is the correct answer. Hope I answered your question, have a good day.<span />
4 0
3 years ago
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