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3 years ago

Acceleration is directly proportional to net force. What is the relationship between acceleration and mass?

Physics

1 answer:

guajiro [1.7K]3 years ago

4 0

Answer:

They are inversely related; As acceleration decreases, mass increases; As acceleration decreases, mass increases.

Explanation:

This is to keep the force the same.

F=2m•0.5a

F=0.5m•2a

Both forces have the same value, but they have acceleration and masses that are inversely proportional to eachother.

In real life, you can see it with a recoil gun. The bullet and the gun have equal but opposite forces, but the bullet accelerates faster than the gun due to its smaller mass, while the gun recoils at a slower acceleration due to its larger mass.

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The place kicker on a football team kicks a ball from ground level with an initial speed of 4.00 m/s at an angle of 29.0° above

mafiozo [28]

Answer:

0.4 s

Explanation:

The time that the ball is in the air can be found with the next formula:

$time = t = \frac{2v_{o}sen\beta}{g}$

where $v_{o}$ is the initial velocity of the ball, in this case:

$v_{o}=4.00 m/s$

β is the angle: β = 29.0°

And g is the acceleration of gravity: $g=9.81m/s^2$

Replacing all the values to find t, we have:

$time = t = \frac{2(4m/s)sen(29)}{9.81m/s^2} = 0.4s$

Thus, the ball is 0.4s in the air.

3 0

3 years ago

The drawing shows a golf ball passing through a windmill at a miniature golf course. The windmill has 8 blades and rotates at an

Naily [24]

To understand the passage between two blades, it is required

to travel the distance of the circumference equivalent to the

segment of the diameter that exists between them,

$v = \frac{d_{ball}}{\Delta t}$

Where

$d_{ball} =$ Ball diameter

$\Delta t=$ Space time

So the angle swept out by either a blade or a space is:

$\theta = 2\pi / 16 = \pi / 8 rad.$

Through the angular velocity

$\omega = \frac{\theta} {t}$

$t = \frac{\theta}{\omega}$

$t= \frac{\pi /8}{1.25} = 0.3141s$

So,

$v = 4.50*10^-2m / 0.3141 s = 0.1432m/s$

5 0

3 years ago

How do you the average speed

svet-max [94.6K]

Speedavg = distance/time

3 0

3 years ago

Rank them from fastest to slowest in how quickly each warms up: (a) steel, 450 j/kgââc ; (b) aluminum, 910 j/kgââc ; (c) copper,

s2008m [1.1K]

The rate of conductivity is different among different substances, like aluminum, steel, and copper. Aluminum conducts heat the fastest at 910 j/kgaac. Steel is next and conducts heat at 450 j/kgaac. Copper conducts heat the slowest at 390 j/kgaac.

5 0

3 years ago

Which statement most accurately describes the second law of thermodynamics?

balandron [24]

Answer:

Energy cannot be changed from one form to another without a loss of usable energy

Explanation:

Second law of thermodynamics states that the total entropy or the randomness of the system remains constant over time. It also states that the net entropy will remain the same or it will increase.

Entropy of a system is given by heat absorbed divided by temperature. It is given by :

$\Delta S=\dfrac{\Delta Q}{T}$

So, the correct option is (A) "Energy cannot be changed from one form to another without a loss of usable energy".

4 0

3 years ago