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The distance between Saturn and the sun is approximately 8.9 × 10^8 mi. The speed of light is approximately 1.9 × 10^5 miles per

lbvjy [14]

khata ko xoro branly branly is fool

7 0

3 years ago

A golfer gives a ball a maximum initial speed of 51.5 m/s. how far does it go

nata0808 [166]

Answer:

Golf ball will go a maximum of 270.36 meter.

Explanation:

Projectile motion has two types of motion Horizontal and Vertical motion.

Vertical motion:

We have equation of motion, v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.

Considering upward vertical motion of projectile.

In this case, Initial velocity = vertical component of velocity = u sin θ, acceleration = acceleration due to gravity = -g $m/s^2$ and final velocity = 0 m/s.

0 = u sin θ - gt

t = u sin θ/g

Total time for vertical motion is two times time taken for upward vertical motion of projectile.

So total travel time of projectile = 2u sin θ/g

Horizontal motion:

We have equation of motion , $s= ut+\frac{1}{2} at^2$ , s is the displacement, u is the initial velocity, a is the acceleration and t is the time.

In this case Initial velocity = horizontal component of velocity = u cos θ, acceleration = 0 $m/s^2$ and time taken = 2u sin θ /g

So range of projectile, $R=ucos\theta*\frac{2u sin\theta}{g} = \frac{u^2sin2\theta}{g}$

Now in the given problem

A golfer gives a ball a maximum initial speed of 51.5 m/s. how far does it go

u = 51.5 m/s, for maximum range θ = 45⁰

So maximum distance reached = $\frac{51.5^2sin(2*45)}{9.81}=270.36 meter$

So it will go a maximum of 270.36 meter.

5 0

4 years ago

A stone of mass m is thrown upwards at an angle φ. The moment the stone leaves your hand it has an acceleration (friction is neg

Lelechka [254]

The correct answer is:

= g

Explanation:

When the object leaves the hand it has a force acted on it mainly it’s weight.

5 0

3 years ago

Materials that conduct heat and electricity well in the solid state result when

MA_775_DIABLO [31]

Materials that conduct heat and electricity well in the solid state result when metals bond with metals. This type of bonding is called metallic bonding. Metallic bonding is when positive ions (metals) are in a 'sea of negative electrons'. The electrons are delocalised, which means they can move around easily and carry charge, and this enables it to conduct electricity, even in a solid state.

8 0

4 years ago

A box with a mass of 0.6-kg falls from a very tall building. While free-falling it is subjected to a frictional drag force given

rjkz [21]

Answer:

1.03m/s

Explanation:

According to the question

Fdrag = bv²

now Fdrag = weight of the box

that is Fdrag = mg

where m = mass of the box, 0.6 Kg

and g = acceleration due to gravity

thus,

Fdrag = bv² becomes

mg = bv²

making v the subject of formula

$v = \sqrt{\frac{mg}{b} }$

$v = \sqrt{\frac{0.6 * 9.8}{5.5} }$

v = 1.03m/s

8 0

3 years ago

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