PHYSICS MIDDLE SCHOOL

A car speeds up from 12.0 m/s to 16.0 m/s in 8.0 s. the acceleration of the car is?

Answers

Answer 1

Answer:

Vi=12m/s Vf=16m/s t=8s a=? a=Vf-Vi/t=16-12/8=4/8=1/2 a=0.5m/s^2

Answer 2

Answer:

According to sig figs, the answer should be 0.500 m/s^2!

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What are the unit for acceleration

Answers

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$\longrightarrow$ The rate of change of velocity per unit time is called acceleration.

$\longrightarrow$ Its SI unit is m/s².

$\longrightarrow$ Formula of acceleration is v-u/t

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Aluminum, carbon, and calcium are examples of what type of matter?Solution
Heterogeneous mixture
Element
Compound

Answers

Element would be it man

the image of a mountain can be seen on the surface of calm water. what property of light is demonstrated?

Answers

Answer:

It is Reflection of light from water surface

Explanation:

When light coming from the mountains incident on the stationary water surface then major proportion of light gets reflected from the surface of water and this will received by the observer eye.

We also know that when light beam gets reflected into the form of beam then it is known as regular reflection.

Here when water surface is calm then the surface is assumed to be plane and in this case the light gets reflected by the surface of water in same direction and we got a good image in the water.

So this property of image is due to reflection of light.

I say it's the regular reflection

near the earth surface the amount of mass an object has does not affect its acceleration due to gravity

Answers

Answer:

True

Explanation:

As per the gravitational law, the gravitational force (F) can be expressed as

$F = (GMm)/(r^(2) )$ ------------- (1)

where,

$F=$ Gravitational force

$G=$ Gravitational constant

$M=$ Mass of the Earth

$m=$ Mass of the object

$r=$ Distance between Earth and object

Also, the force due to gravity,

$F=mg$ ------------- (2)

where,

$F=$ Gravitational force

$g=$ Acceleration due to gravity

$m=$ Mass of the object

Deducing both the equations

$mg = (GMm)/(r^(2) )\n g = (GM)/(r^(2) )\n$

From the above equation it is clear that the acceleration due to gravity is independent of the mass of the object.

How many new moons will occur in 2016?

Answers

there will be 13 new moons to occur in 2016 im pretty sure

the answer is 13 new moons i think. Hope this helped

A 2.0 kg guinea pig runs at a speed of 1.0 m/s what is the guinea pigs kinetic energy

Answers

The kinetic energy (KE) is calculated using the formula KE = 1/2 * m * v^2, resulting in a kinetic energy of 1.0 Joule for a 2.0 kg guinea pig moving at a speed of 1.0 m/s.

The kinetic energy (KE) of an object in motion is determined by the formula: KE = 1/2 * m * v^2, where m is the mass and v is the velocity. For the guinea pig in question, with a mass (m) of 2.0 kg and a velocity (v) of 1.0 m/s, the calculation is as follows:

KE = 1/2 * 2.0 kg * (1.0 m/s)^2

KE = 1/2 * 2.0 kg * 1.0 m^2/s^2

KE = 1.0 kg * 1.0 m^2/s^2

KE = 1.0 Joule

Therefore, the kinetic energy of the 2.0 kg guinea pig running at a speed of 1.0 m/s is 1.0 Joule.

The kinetic energy for the above data is 1.0000 J.

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