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3 years ago

What kind of force do you exert on an object when you pull it towards you?

Physics

2 answers:

MA_775_DIABLO [31]3 years ago

6 0

Answer:

Forces of Attraction

Explanation:

That pull is gravity at work. Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass.

Hope that this helps you and have a great day :)

lana [24]3 years ago

4 0

Answer:

Gravity

Forces of Attraction: pull is gravity at work. Every object in the universe that has mass exerts a gravitational pull, or force, on every other mass.

Explanation:

hope this helps :-)

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Car A with a mass of 725 kilograms is traveling east at an initial velocity of 15 meters/second. It collides head–on with car B,

ikadub [295]

Answer:

$p_t_o_t_a_l=250kg\frac{m}{s}$

Explanation:

The total momentum of a system is defined by:

$(mv)_t_o_t=m_1v_1+m_2v_2+...$

Where,

$(mv)_t_o_t$ is the total momentum or it could be expressed also as $p_t_o_t_a_l$ .

$m_1$ and $m_2$ represents the masses of the objects interacting in the system.

$v_1$ and $v_2$ are the velocities of the objects of the system.

Remember: The momentum is a fundamental physical magnitude of vector type.

We have:

$m_1=725 kg$

$v_1=15\frac{m}{s}\\m_2=625 kg$

We are going to take the east side as positive, and the west side as negative. Then the velocity of the car B, has to be negative. It goes in a different direction from car A.

$v_2=-17\frac{m}{s}$

Then the total momentum of the system is:

$p_t_o_t_a_l=m_1v_1+m_2v_2\\p_t_o_t_a_l=(725kg)(15\frac{m}{s})+(625kg)(-17\frac{m}{s})\\p_t_o_t_a_l=10875kg\frac{m}{s}-10625kg\frac{m}{s}\\p_t_o_t_a_l=250kg\frac{m}{s}$

8 0

4 years ago

4. The 50-kg crate shown in Fig. rests on a horizontal surface for which the coefficient of

laila [671]

Answer:

5.057 m/s^2

Explanation:

Force of kinetic friction = .3 = F /normal force

.3 = F /(50* 9.81) F of friction = 147.15

Net force = 400 - 147.5 = 252.85 N

F = m * a

252.85 = 50 * a a = 5.057 m/s^2

5 0

2 years ago

PLEASE ANSWER

gtnhenbr [62]

Answer:

A balance and a beaker of water!

Explanation:

Krishne wants to measure the mass and volume of a key. The tools that are to be used are – a balance and a beaker of water.

Mass will be represent with the amount of matter that is in an object. This will be measured in terms of kilogram. The mass can easily be measured with balance.

Volume is the quantity of matter that is in the object. This is measured in terms of cubic meter. If you drop the key in a beaker of water, the water inside the beaker will increase and this increases the volume of water that will be equal to volume of key.

7 0

3 years ago

A 55 kg pole vaulter falls from rest from a height of 5.4 m onto a foam rubber pad. The pole vaulter comes to rest 0.24 s after

AnnZ [28]

Answer:

a) 10.3 m/s

b) 566 N

Explanation:

$v {}^{2} = {u}^{2} + 2as \\ v {}^{2} = 0 {}^{2} + 2(9.81)(5.4) \\ v = 10.3 \: ms {}^{ - 1}$