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ozzi
2 years ago
11

How long does it for a car to cover 100 miles at 60 mi/hr? Use one of the following equations:

Physics
1 answer:
yaroslaw [1]2 years ago
8 0

Answer:

Explanation:

r = 60 mph

d = 100 miles

t = ?

t = d/r

t = 100 /60

t = 1 2/3 hour or 1 hour and 40 minutes.

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the momentum of a spring coil when the external compressing force is removed b the difference between the final momentum and the
Fed [463]

Answer:

the correct one is b

the difference between the final moment and the initial moment

Explanation:

The momentum is related to the moment

          I = ΔP

          ∫ F dt = p_f - p₀

where p_f and p₀ are the final and initial moments, respectively

When checking the different answers, the correct one is b

the difference between the final moment and the initial moment

7 0
3 years ago
NEED ANSWER ASAP!!!!!!
olga55 [171]

Answer:

yes. why do you need this answered asap? lol

5 0
3 years ago
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A crate falls from an airplane flying horizontally at an altitude of 2,000 m.
Hatshy [7]

Answer:

20.2 seconds

Explanation:

The airplane (and therefore the crate) initially has no vertical velocity, so v₀ = 0 m/s.

The crate is in free fall, so a = -9.8 m/s².

The crate falls downward, so Δx = -2000 m.

Find: t, the time it takes for the crate to land.

Δx = v₀ t + ½ at²

-2000 m = (0 m/s) t + ½ (-9.8 m/s²) t²

t = 20.2 s

It takes 20.2 seconds for the crate to land.

7 0
3 years ago
Is friction and pushing similar ????
olya-2409 [2.1K]

Answer:

Yes, they are.

Explanation:

3 0
3 years ago
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A 200g block on a 50cm long string swings in a circle, it's frictionless and 75rpm. What is its speed and tension on string
krek1111 [17]
Angular velocity = (75x2pie)/60
                          =2.5pie ras^-1 
linear velocity(or speed) at end of string, v = radius x angular velocity
                                                           v= 0.5 x 2.5pie
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tension of string (I beleve is centeral force aplied by string), F= (mv^2)/r
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                                                                                      F=6.18 N
(sorry if wrong)
3 0
3 years ago
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