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yulyashka [42]
3 years ago
11

Can you have constant speed with zero net force?

Physics
1 answer:
FinnZ [79.3K]3 years ago
6 0
Yes. Definitely the answer to this question defies the common sense of a layman in physics. However, common sense and intuition may lead you astray from the scientific path.
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Mary walked north from her home to Sheila's home, which is 4.0 kilometers away. Then she turned right and walked another 3.0 kil
bixtya [17]
The answer is speed: 4.7 km/h, velocity: 3.3 km/h.

Distances and time are given:
d1 =  4 km
d2 = 3 km
d3 = 5 km
t = 1.5 h

The speed can be expressed as a distance (d) divided by time (t). The average speed (s) is total distance travelled divided by time:
s = (d1 + d2)/t = (4+3)/1.5 = 7/1.5 = 4.7 km/h

The average velocity (v) is total displacement (d₁) from the starting point divided by time. Since Mary's starting point was home, and she walked to the supermarket, which is 5.0 kilometers from her own home, her displacement is 5 km:
v = d₁/t = 5/1.5 = 3.3 km/h

8 0
3 years ago
The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin is called its
son4ous [18]
Specific heat.  The definition of specific heat is the amount of energy required to raise the temperature of 1g of a substance by 1K or 1°C.
8 0
3 years ago
Read 2 more answers
Assume that the polymer material has a constant refractive index of 1.5. For light of 600nm wavelength at normal incidence, what
yaroslaw [1]

Answer:

Minimum thickness will be 100 nm

Explanation:

We have given refractive index is n = 1.5

Wavelength of the light incidence \lambda= 600 nm

We have to find the smallest thickness of the film so that there will be minimum light reflect

For minimum thickness of non reflecting film

t=\frac{\lambda }{4n} , here t is thickness, \lambda is wavelength and n is refractive index

Putting all values t=\frac{600}{4\times 1.5}=100nm

So minimum thickness will be 100 nm

8 0
3 years ago
The amount of kinetic energy an object has depends upon which of the following factors? I. the object's velocity II. the object'
harina [27]

1.) The object's Velocity

Faster it goes, more kinetic energy it has

8 0
3 years ago
What travels faster than anything anything else in the universe?
cluponka [151]

Answer:

The announcement he had made promised to overturn our understanding of the Universe. If the data gathered by 160 scientists working on the project were correct, the unthinkable had been observed. Particles – in this case, neutrinos – had travelled faster than light.

Explanation:  Plz Mark brainleist

4 0
2 years ago
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