1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka-Z-Leto [24]
3 years ago
5

Which of Newton's laws

Physics
2 answers:
Virty [35]3 years ago
8 0

Answer:

Newton's 2nd law think soo

olya-2409 [2.1K]3 years ago
6 0
It is a “a” because if something stays at rest it stay but if has movement then it will move
You might be interested in
An airplane starts from A and flies to B at a constant speed. After reaching B it returns to A at the same speed. There was no w
Dafna1 [17]

Answer:

When there is wind it takes longer

Explanation:

With no wind, the round trip time is

t_1=\frac{d}{v}+\frac{d}{v}=\frac{2d}{v}

When we have a constant wind speed w

t_2=\frac{d}{v-w} +\frac{d}{v+w} =\frac{2vd}{v^{2} -w^{2}}

comparing the reciprocal times;

\frac{1}{t_2}=\frac{v^{2}-w^{2} }{2vd}=\frac{v}{2d}-\frac{w^{2}}{2vd}   \leq \frac{v}{2d}=\frac{1}{t_1}

This means that t1 is smaller than t2, ergo, it takes longer with wind

4 0
2 years ago
In tae-kwon-do, a hand is slammed down onto a target at a speed of 10 m/s and comes to a stop during the 7.0 ms collision. Assum
wlad13 [49]

Answer:

(A) Impulse = 9Ns

(B) F = 1286N

Explanation:

Impulse = change in momentum = m(v-u)

v = 0 (the hand comes to a stop)

u = -10m/s

Mass = 0.9kg

Impulse = 0.9 ×(0- (-10))

= 9Ns

(B) F×t = Impulse

F = Impulse/ t

t = 7ms = 7×10-³

F = 9/ (7×10-³)

F = 1286N.

5 0
2 years ago
Why does the lens need to be thicker for viewing nearby objects?
Maurinko [17]

Answer: To focus on a near object – the lens becomes thicker, this allows the light rays to refract (bend) more strongly. To focus on a distant object – the lens is pulled thin, this allows the light rays to refract slightly.

Explanation:

5 0
3 years ago
Compare the mass of block A, the mass of block B is:
Alexxx [7]

the answer would be b. it`s half as great

6 0
3 years ago
Calculate the density of a substance that has mass 10g and volume 2mL
noname [10]

You're supposed to divide the mass by the volume, which is going to equal to 5

4 0
3 years ago
Other questions:
  • What is the kinetic energy of a 200 kg satellite as it follows a circular orbit of radius 8x106m around the earth?
    10·2 answers
  • Charges that are different each other​
    9·2 answers
  • How far will a arrow fly is shot horizontally from a cliff that is 7m high and with a speed of 30?
    10·1 answer
  • Differences between looping and simersaulting​
    8·1 answer
  • A proton traveling due west in a region that contains only a magnetic field experiences a vertically upward force (away from the
    13·2 answers
  • An 85 kg man and his 35 kg daughter are sitting on opposite ends of a 3.00 m see-saw. The see-saw is anchored in the center. If
    15·1 answer
  • : Suppose somebody, using the same apparatus which you used, measured I = 45.5 ma, and V = 8.2 volts on some resistor. Using you
    13·1 answer
  • A polar bear runs at a speed of 8.3 m/s, how far will it travel in 60 seconds?
    14·2 answers
  • 8. The mass of the sun is 1.99 x 1030 kilograms and its distance from Earth is 150 million kilometers (150 x 109 meters). What i
    12·1 answer
  • A football is thrown due north across a 40 meter river and it takes 2 seconds to cover that distance.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!