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3 years ago

If someone travels 3000 feet in one second, how far will it travel in 18 minutes

Physics

2 answers:

MaRussiya [10]3 years ago

8 0

Answer:3240000 feet's

Explanation:

Since 60seconds equal 1minute therefore 1080 seconds equal 18minutes

Therefore the total number of feet traveled for 18minutes(1080seconds)=3000×1080=3240000 feet

34kurt3 years ago

3 0

Answer:

3240000 ft

Explanation:

There are 60 seconds in a minute so, multiply 60 seconds by 18 minutes. That equals 1080 seconds.

Since there are 3000 ft in each second, just multiply 1080 seconds by 3000 ft.

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A block, M1=10kg, slides down a smooth, curved incline of height 5m. It collides elastically with another block, M2=5kg, which i

erma4kov [3.2K]

Answer:

2.86 m

Explanation:

Given:

M₁ = 10 kg

M₂ = 5 kg

$\mu_k$ = 0.5

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distance traveled, s = 2 m

spring constant, k = 250 N/m

now,

the initial velocity of the first block as it approaches the second block

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let the velocity of second ball be v₂

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M₁ × u₁ = M₂ × v₂

on substituting the values, we get

10 × 9.89 = 5 × v₂

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now,

let the velocity of mass 2 when it reaches the spring be v₃

from the work energy theorem, we have

Work done by the friction force = change in kinetic energy of the mass 2

$0.5\times5\times9.8\times2 = \frac{1}{2}\times5\times( v_3^2-19.79^2)$

v₃ = 20.27 m/s

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Energy of the spring = Kinetic energy of the mass 2

$\frac{1}{2}kx^2=\frac{1}{2}mv_3^2$

on substituting the values, we get

$\frac{1}{2}\times250\times x^2=\frac{1}{2}\times5\times20.27^2$

x = 2.86 m

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