3 years ago

You accidentally drop a book down a stairwell. Assuming no air resistance, How fast will the book be moving after 1.1 second?

Physics

2 answers:

vazorg [7]3 years ago

7 0

Answer: 10.8 m/s

Explanation: Rounding up

nlexa [21]3 years ago

3 0

It would be accelerating at -9.8 m/s^2 so it’s velocity would be equal to -9.8•1.1 so the answer is 10.78m/s

You might be interested in

A mine elevator cage with a mass of 2.5 tons empty is descending at a rate of 32 km/hr when the hoist mechanism jams and stops s

True [87]

Answer:

σ = 4.1 MPa

Explanation:

Given that

m= 2.5 kg

v= 32 km.hr

v= 8.88 m/s

The kinetic energy of the mass ,KE

KE = mv²/2

KE = 2.5 x 8.88²/2

KE= 98.56 J -------1

The strain energy of the string

$E=\dfrac{\sigma^2}{2E}AL$

$E=\dfrac{\sigma^2}{2\times 84,000\times 10^6}\times 6.5\times 10^{-4}\times 1500$

$E={\sigma^2}\times {5.80\times 10^{-12}}$ ----2

KE= E

$98.56={\sigma^2}\times {5.80\times 10^{-12}}$

$\sigma =\sqrt{\dfrac{98.56}{5.80\times 10^{-12}}}$

σ = 4.1 MPa

4 0

3 years ago

An astronomical unit is _____.

Tamiku [17]

C. the distance from earth earth to the sun

6 0

3 years ago

Read 2 more answers

A woman can lift barrels a vertical distance of 1 meter or can roll them up a 2-meter long ramp to the same elevation. If she us

olchik [2.2K]

Answer:

answer is 1/2 as much force required

8 0

3 years ago

Which is a correct example of the principle of conservation of momentum? A) reversing of a car at a dead end B) conversion of ra

Hunter-Best [27]

I think the answer would be D.

3 0

3 years ago

Read 2 more answers

Drag the boxes to other mechanical, both or electromagnetic. some may be for both some may be for electromagnetic and some may b

erastova [34]

Answer:

infared light is both

can be reflected is electromagnetic

longitude wave is mechanical

visible light is electromagnetic

transfers energy is both

transfers waves is mechanical

requires midium i think is both

speed dependent is both

Explanation:

hope this helps

8 0

3 years ago