3 years ago

Two Question!

Physics

1 answer:

Zina [86]3 years ago

5 0

Answer:

1.Gravity

2.meter per second

Explanation:

Gravity is the driving force behind all agents of erosion

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A car going 22 m/s increases its speed to pass a truck. Five seconds later the car is going 35 m/s. Calculate the acceleration o

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Answer:

I don't know

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1. Two blocks travel along a level frictionless surface. Block A is initially moving to the right at 5.0 m/s, while block B is i

ad-work [718]

Answer: 2.67 m/s

Explanation:

Given

Mass of block A is $m_a=2\ kg$

mass of block B is $m_b=3\ kg$

The initial velocity of block A $u_a=5\ m/s$

the initial velocity of block B is $u_b=0$

After collision velocity of block A is $v_a=1\ m/s$

Conserving momentum

$m_au_a+m_bu_b=m_av_a+m_bv_b\\\\2\times 5+3\times0=2\times 1+3\times v_b\\\\v_b=\dfrac{8}{3}=2.67\ m/s$

The momentum of block A after the collision is $P_a=2\times 1=2\ kg.m/s$

Therefore, there is no change in sign.

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2 years ago

When the net force of opposite forces is zero , the forces are

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The answer is balanced

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2 years ago

STATE THE HOOKE'S LAW

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The Hooke's law is a principal of physics that states that the force needed to extend or compress a spring by some distance x scales linearly with respect to that distance.

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3 years ago

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Which quantity is measured in newton seconds (Ns)?

pshichka [43]

Answer:

Impulse

Explanation:

Impulse is force times time

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2 years ago