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4 years ago

11

A student places five books next to each other on their ends. She then pushes the first book with her finger, and a few seconds

later, the last book falls. Which statement is correct about this chain of events?(1 point) There is a correlation between the force of the finger and the placement of the books. The acceleration of the books as they fall causes the force of the finger. The force of the finger causes the books to accelerate and fall. There is causation between the force of the finger and the placement of the books.

1 answer:

zepelin [54]4 years ago

5 0

Answer:

The force of the finger causes the books to accelerate and fall.

Explanation:

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BigorU [14]

Answer:

The cup with 0.5L

Explanation:

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3 years ago

If the impulse acting on an object is 100n waht is force acting on it if the time 1 s

lutik1710 [3]

force = 100 N

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⇒ 100 N.s = force * 1 s

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3 years ago

Which statement describes between a cup if cold water and a cup of boiling water

marishachu [46]

The thermal energy keeps these two changing their temperature over time.

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3 years ago

Six automobiles are initially traveling at the indicated velocities. The automobiles have different masses and velocities. The d

Mumz [18]

Answer:

Part a)

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part b)

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part c)

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Explanation:

Red car

mass = 1000 kg

speed = 10 m/s

Yellow car

mass = 2000 kg

speed = 5 m/s

Blue car

mass = 500 kg

speed = 20 m/s

Light Blue car

mass = 1000 kg

speed = 20 m/s

Green car

mass = 500 kg

speed = 10 m/s

Purple car

mass = 4000 kg

speed = 5 m/s

Part a)

Now we know that momentum of each car is product of mass and velocity

so we will have

Red Car

$P_1 = m v$

$P_1 = (1000)(10)$

$P_1 = 10^4 kg m/s$

Yellow Car

$P_2 = m v$

$P_2 = (2000)(5)$

$P_2 = 10^4 kg m/s$

Blue Car

$P_3 = m v$

$P_3 = (500)(20)$

$P_3 = 10^4 kg m/s$

Light Blue Car

$P_4 = m v$

$P_4 = (1000)(20)$

$P_4 = 2\times 10^4 kg m/s$

Green Car

$P_5 = m v$

$P_5 = (500)(10)$

$P_5 = 5 \times 10^3 kg m/s$

Purple Car

$P_6 = m v$

$P_6 = (4000)(5)$

$P_6 = 2\times 10^4 kg m/s$

So the momentum is given as

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part b)

Impulse is given as change in momentum so here we can say that final momentum of all the cars will be zero as they all stops and hence the impulse is same as initial momentum of the car

so the order of impulse from largest to least is given as

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

Part c)

Force is defined as rate of change in momentum

Now let say all cars will stop in same time interval

so we will have

$Force = \frac{impulse}{time}$

so we will have

force is in same order as that of impulse

so it is given as

Purple car = Light Blue car > (Red car = Yellow Car = Blue car) > Green Car

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4 years ago

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What is the unit for measuring energy

sdas [7]

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3 years ago