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2 years ago

A glass falls off a shelf. How fast is the glass moving after 0.4 seconds?

Physics

2 answers:

Rufina [12.5K]2 years ago

8 0

Answer:

3.9 m/s

Explanation:

Apex ; good luck everyone! :)

tresset_1 [31]2 years ago

6 0

On Earth, gravity increases the speed of a falling object by about 9.8 m/s
every second that it falls.

In 0.4 second, its speed increases by (0.4 x 9.8) = 3.92 m/s.

If it just rolled off of the shelf at the beginning of that 0.4 second, then it
started from zero speed, and its speed after 0.4 second is 3.92 m/s.

Its velocity is 3.92 m/s downward.

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Answer:

W = 0.060 J

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Explanation:

solution:

for the spring:

W = 1/2*k*x_1^2 - 1/2*k*x_2^2

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the work-energy theorem,

W_tot = K_2 - K_1 = ΔK

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3 years ago

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xxMikexx [17]

Answer:

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Explanation:

7 0

3 years ago

Two loudspeakers emit 600 Hz Hz notes. One speaker sits on the ground. The other speaker is in the back of a pickup truck. You h

Firdavs [7]

Answer:

The truck's speed is 4.04 m/s.

Explanation:

Given that,

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Put the value into the formula

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3 years ago

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Answer:

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Explanation:

The solution to the problem can be found in the attachment below.

6 0

3 years ago