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3 years ago

In 5 seconds a car moving in a straight line increases its speed form

Physics

1 answer:

marusya05 [52]3 years ago

5 0

Answer:

10,800 m (^2)

Explanation:

<u>234,000 m/s - 180,000 m/s</u> = 10,800 m (^2)

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A white pool ball of mass 1.0 kg moving at 10 m/s collides with

solniwko [45]

The velocity of the red ball after the collision is 5.8 m/s

Explanation:

In absence of external forces on the system, we can apply the principle of conservation of momentum. The total momentum of the system must be conserved before and after the collision, so we can write:

$p_i = p_f\\m_1 u_1 + m_2 u_2 = m_1 v_1 + m_2 v_2$

where:

$m_1 = 1.0 kg$ is the mass of the pool ball

$u_1 = 10 m/s$ is the initial velocity of the pool ball

$v_1 = 3.0 m/s$ is the final velocity of the pool ball

$m_2 = 1.2 kg$ is the mass of the red ball

$u_2 = 0$ is the initial velocity of the red ball

$v_2$ is the final velocity of the red ball

Solving the equation for v2, we find the final velocity of the red ball after the collision:

$v_2 = \frac{m_1 u_1-m_1v_1}{m_2}=\frac{(1.0)(10)-(1.0)(3.0)}{1.2}=5.8 m/s$

Learn more about collisions:

brainly.com/question/13966693#

brainly.com/question/6439920

#LearnwithBrainly

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3 years ago

People often use simple machines like pulleys, levers, and ramps because they say the machine “makes the work easier.” Which of

dimulka [17.4K]

I think the answer is D.
Hope this help

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3 years ago

imagine that two balls, a basketball and a much larger exercise ball, are dropped from a parking garage. If both the mass and ra

tiny-mole [99]

Hypothesis

Let there is no air drag or any other resistance force due to surrounding

Now the force equation of ball is given as

$F = mg$

$ma = mg$

$a = g$

so the ball will be dropped down by acceleration a = g and this acceleration is independent of size and mass of the ball

So in this case both balls will be dropped by same acceleration.

So here both balls will hit the ground at same time

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3 years ago

How much work is done on 10.0C of charge to move it through a potential difference of 9V in 10s?

Norma-Jean [14]

Here is the link with ans on it
https://moorsscience.wikispaces.com/file/view/chapter+12+answers.pdf
hope it helps

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3 years ago

How much heat is needed to raise the temperature of 7g of Water by 20° C

beks73 [17]

the answer to your question is 10.5 kJ

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3 years ago