3 years ago

What two things must you know to find the momentum of an object? :( anyone?

2 answers:

7 0

Linear Momentum is a vector quantity.
 p = mass * Velocity
We need to know the mass, and velocity (magnitude and direction)

miss Akunina [59]3 years ago

4 0

You will need too know the mass and velocity

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A concave mirror produces four times magnified image of ab object placed at 10 cm in front of the mirror. find the position of i

Julli [10]

Answer:

40 cm

Explanation:

We are given that

Magnification of concave mirror, m=4

Object distance, u=-10cm

We have to find the position of image.

We know that

Magnification of concave mirror, m= $-\frac{v}{u}$

Using the formula

$4=-\frac{v}{-10}$

$4=\frac{v}{10}$

$v=4\times 10$

$v=40cm$

Hence, the image is formed at distance 40 cm behind the mirror.

7 0

3 years ago

Wich of the following celestial bodies is most likely to have many craters

Ede4ka [16]

Where are the following awnsers?

6 0

3 years ago

A 35.0 g bullet strikes a 50 kg stationary piece of lumber and embeds itself in the wood. The piece of lumber and the bullet fly

astraxan [27]

Answer:

12294.31 m/s

Explanation:

Momentum = (mass)(velocity)

Momentum before = Momentum after

(momentum of bullet)+(momentum of block)=(momentum of bullet and block)

0.035v+50(0)=(0.035+50)(8.6)

0.035v=430.301

v=12294.3142857m/s

4 0

3 years ago

I WILL MARK YOU THE BRAINLIEST

FrozenT [24]

it’s 120 grams check it

6 0

3 years ago

A large box of mass 4kg slides across a frictionless surface with a velocity of 12m/s to the right. It collides with a smaller b

nexus9112 [7]

Answer:

Explanation:

Let's call the large box "1" and the smaller box "2". The equation for this works so that momentum is conserved, as the Law states.

$[(m_1v_1+m_2v_2)]_b=[m_1+m_2)v]_a$ That says that the momentum of the larger box plus the momentum of the smaller box before the collision has to equal the momentum of the combined masses since they stick together. Filling in:

[(4(12) + 2(0)] = [(4 + 2)v] and

48 + 0 = 6v so

v = 8 m/s to the right

7 0

3 years ago