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mylen [45]
2 years ago
13

How long with it take an object to accelerate from 6 m/s to 13 m/s at a rate of 1.4 m/s2. *

Physics
1 answer:
Blizzard [7]2 years ago
7 0

Explanation:

hello,

a = ( v - u ) / t

where u is the initial velocity.

and v is the final velocity.

t represents time,

and a represents acceleration.

in this case,

a = 1.4 m/s²

u = 6 m/s

v = 13 m/s

hence,

1.4 = (13 - 6)/t

1.4t = 7

t = 7/1.4

t = 5 s

thank you!

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4) Kinetic energy is directly related to _______
TEA [102]

Answer:

4) C.mass

5) C. Potential Energy

Explanation:

4) Kinetic energy (KE) of an object is the energy that it possesses due to its motion. If a mass is in motion ,it has a kinetic energy .

By definition

Kinetic.Energy=\frac{1}{2}*mass*velocity^{2}

what matters in Kinetic energy is the mass and the velocity only .

there fore the answer is

C.mass

5) Potential energy is the energy stored in an object, due to the object's position or arrangement.

By definition

Potential.Energy=mass*gravitaional.Acceleration*height

in potential energy the height matters.higher the height , higher the energy

therefore the answer is

C.Potential Energy

6 0
3 years ago
Bjorn is holding a tennis ball outside a second floor window (3.5 meters from the ground) and billie jean is holding one outside
MArishka [77]
The answer is 1.01 x 10^(-11) N. I arrived to this answer through calculating the GPEs of both balls. Bjorn's ball has a GPE of 1.402 x 10^(-11) N. Billie Jean's ball has a GPE of <span>2.503 x 10^(-11) N. I subtracted the two and I found that Billie Jean's tennis ball has a GPE of 1.01 x 10^(-11) more than Bjorn's tennis ball.</span>
4 0
3 years ago
What is the formula for kinetic energy​
Svetradugi [14.3K]
The equation for Kinetic Energy is KE = 1/2 m v^2, where m is the mass, and v is the velocity. The velocity in this equation is squared, which means that it is exponential. That means that as the velocity increases, you will be multiplying by a bigger and bigger number! KE = 18 joules!
6 0
3 years ago
Read 2 more answers
Which best describes how energy changes form in a car's engine?
andrezito [222]

Answer:

Multiple transformations occur because the chemical energy of the fuel is changed to several forms of energy

Explanation:

In a car engine, multiple energy transformation takes place. The chemical energy storef in fuel is transformed into mechanical energy which helps move the wheels of the vehicle.

The mechanical energy can also be transformed into electrical energy through a sort of dynamo system in vehicles. Stereo players use the electrical energy to produce sound.

We see that multiple energy conversions are common in a motor car.

6 0
4 years ago
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A hockey puck has a coefficient of kinetic friction of μk = .35. If the puck feels a normal force (FN) of 5 N, what is the frict
alina1380 [7]

Answer:

The frictional force is  F_f =  1.75 \  N

Explanation:

From the question we are told that

     The coefficient of kinetic force is  μk = 0.35

     The normal force felt by the puck is  F_N  =  5 \  N

Generally the frictional force that acts on the puck is mathematically represented as

          F_f =  \mu_k  *  F_N

=>       F_f =  0.35  *  5

=>       F_f =  1.75 \  N

3 0
3 years ago
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