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natita [175]
3 years ago
13

What happens to the total energy of the system (again, cart only) as the cart goes from its starting point to the bottom of the

ramp?
Physics
1 answer:
loris [4]3 years ago
6 0

Answer:

5

Explanation:

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If a swimmer pushes off a pool wall with a force of 250n, what is her acceleration.
grigory [225]

Her acceleration is

           (250) divided by (the swimmer's mass, in kilograms).

The unit is " meters per second² " .

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3 years ago
The thunderbolt bobsled team is training for Olympic Gold. During practice they start a run with a speed of 0.57 m/s, they compl
aleksandr82 [10.1K]
acceleration=\frac{\Delta\ velocity}{\Delta\ time}\\\\
v_{initial}=0,57m/s\\
distance=1360m\\ \Delta\ time=89,49seconds\\\\
v_{final}-v_{initial}=\frac{distance}{time}\\
v_{final}=\frac{distance}{time}+v_{initial}\\
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4 years ago
A particle is moving along a circular path of 2-m radius such that its position as a function of time is given by u = (5t 2) rad
OverLord2011 [107]

Answer:

Explanation:

Given

radius of  path r=2\ m

Velocity of Particle \theta =5t^2 rad

where t=time in seconds

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tangential acceleration is a_t=\alpha \times r

a_t=10\times 2=20\ m/s^2

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a_c=(10t)^2\times 2=200t^2

net acceleration is sum of tangential and centripetal force at any time t is given by

a_{net}=\sqrt{(a_c)^2+(a_t)^2}

a_{net}=\sqrt{(200t)^2+(20)^2}

a_{net}=20\sqrt{(10t)^2+1}\ m/s

                 

8 0
3 years ago
What are the main ideas of physical science
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<span>This method states: </span>

<span>1. observe a "real" ( not imaginary ) phenomena. </span>

<span>2. make a hypothesis ( or theory / idea ) that EXPLAINS this phenomena. </span>

<span>3. conduct a real experiment to test this hypothesis. </span>

<span>4. confirm that the experiment validates the original hypothesis and if necessary amend the theory. </span>

<span>This method is responsible for virtually every scientific explanation of every kind. </span><span>It has worked so well that the very communication you are having with me is a result of the wonders of physical science. </span>

<span>Hope your question was answered :)</span>
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Answer:

That is true

Explanation:

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