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4 years ago

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a spring scale is constructed so that each 0.10-n increment is separated by 0.50 cm. what spring constant is necessary for the s

cale to be accurate?

1 answer:

Goryan [66]4 years ago

7 0

Answer:

5.00

Explanation:

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A car starts from rest and is moving at 60.0 m/s after 7.50 s. What is the car's average acceleration?

Scrat [10]

Answer:

${ \boxed{ \bold{ \sf{Acceleration \: ( \: a) = 8 \: m/ {s \: }^{2} }}}}$

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♨ Question :

A car starts from rest and is moving at 60.0 m/s after 7.50 s. What is the car's average acceleration ?

♨ $\underbrace{ \sf{Required \: Answer : }}$

☄ Given :

Initial velocity ( u ) = 0
Final velocity ( v ) = 60.0 m/s
Time ( t ) = 7.50 s

☄ To find :

Acceleration ( a )

✒ We know ,

$\boxed{ \underline{ \bold{ \sf{Acceleration \: ( \: a) = \frac{Final velocity ( v ) - Initial velocity ( u)}{t} }}}}$

Substitute the values and solve for a.

➛ $\sf{a = \frac{60.0 - 0}{7.50}}$

➛ $\sf{a = \frac{60.0}{7.50}}$

➛ $\boxed{ \boxed{ \sf{a = 8 \: m/ {s \: }^{2} }}}$

---------------------------------------------------------------

✑ Additional Info :

When a certain object comes in motion from rest , in the case , initial velocity ( u ) = 0
When a moving object comes in rest , in the case , final velocity ( v ) = 0
If the object is moving with uniform velocity , in the case , u = v.
If any object is thrown vertically upwards in the case , a = -g
When an object is falling from certain height , in the case , final velocity at maximum height ( v ) = 0.

Hope I helped!

Have a wonderful time ツ

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4 0

3 years ago

According to the theory of plate to tonics how do two plates interact to form large mountain range

Mariana [72]

When the two plates converge or collide they start to build pressure and slowly they lift up and create mountains

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3 years ago

Read 2 more answers

During an auto accident, the vehicle's air bags deploy and slow down the passengers more gently than if they had hit the windshi

MArishka [77]

Answer:

0.3814128 m

Explanation:

t = Time taken = 36 ms

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration = 60g

g = Acceleration due to gravity = 9.81 m/s²

$v=u+at\\\Rightarrow u=v-at\\\Rightarrow u=0-(-9.81\times 60)\times 36\times 10^{-3}\\\Rightarrow u=21.1896\ m/s$

$v^2-u^2=2as\\\Rightarrow s=\dfrac{v^2-u^2}{2a}\\\Rightarrow s=\dfrac{0^2-21.1896^2}{2\times -9.81\times 60}\\\Rightarrow s=0.3814128\ m$

The distance the person traveled is 0.3814128 m

4 0

3 years ago

Why do the birds and butterflies keep flying into my window? (4 butterflies, 2 birds). I think there after my blood.

Zina [86]

Answer:

Is that an actual question for school?

6 0

3 years ago

derric climbs onto his roof to hang Christmas light. If the roof is 4.3 meters from the ground and derrick gains 2730 J of poten

Lelu [443]

Mass of Derrick at a height 4.3 m having 2730 joule of energy is 65 Kg.

<h3>What is the expression of gravitational potential energy near the earth surface?</h3>

Mathematically, gravitational potential energy near the earth surface= m×g×h
m= mass of Derrick, g= acceleration due to gravity, h= height at which Derrick present
Then, mass (m) of Derrick = potential energy/ (g×h)

<h3>What is the mass of Derrick, if he gains 2730 joule of energy at 4.3m above the ground?</h3>

Mass of Derrick= 2730/(9.8×4.3)

= 65 kg

Thus, we can conclude that the mass of Derrick is 65 Kg.

Learn more about the gravitational potential energy here:

brainly.com/question/26588957

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4 0

2 years ago