Keeping in mind the average reaction time, a motorist will travel 11 feet for each __________ of speed before hitting the brake.

Answers

Answer 1

Answer: The answer is for Each 10 MPH

It's usually written in the hand book if you want to take a Driver permit test.

They want us to always maintain a safe distance between vehicles because if somehow we suddenly step on a brake , the other driver cannot instantly stopped on the spot and could potentially cause a crash

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Aristotle supported which of these views? The Sun and all the planets revolve around Earth. The speed of a free-falling object is independent of its weight. Earth and other planets revolve around the Sun. Every action has an equal and opposite reaction. The fifth element, ether, does not exist in heavenly bodies. NextReset
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Bands of waves in the electromagnetic spectrum are arranged in order ofa. frequency and wavelength.
b. chronology.
c. discovery.
d. use and applications.

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Bands of waves in the electromagnetic spectrum are arranged in order of frequency and wavelength. The answer is letter A. The rest of the choices do not answer the question above.

The approximate size of a galaxy can be measured by using the doppler effect. true or false.

Answers

Answer: The correct answer is False.

Explanation:

Scientists use the Doppler effect to understand the universe by determining the motion of the object.

Doppler effect: It is the phenomenon in which there is relative motion between the source and listener or source or observer.

Red shift and blue shift can be explained by using the concept of Doppler effect.

From red shift and blue shift, one can conclude that galaxies or stars are moving towards us or going away from us.

The light is shifted to longer wavelength which is red in the case of red shift. The light is shifted to shorter wavelength which is blue in the case of blue shift.

Therefore, "the approximate size of a galaxy can be measured by using the Doppler effect", the given statement is false.

Doppler effect just helps us in measuring the deviation of sound when observer or source of sound is in motion. Same thing can be observe in case of electromagnetic radiations but Irregular galaxies are different from elliptical and spiral galaxies because the contain very few stars. Just 'cause of that deviations, we can't use Doppler effect in measuring the size of galaxy

In short, Your Answer would be "False"

Hope this helps!

super mario, spying a mystery block just ahead and wanting star power, takes a running leap towards the block, which is a distance of 8.2 m above mario's head. the acceleration due to gravity in the mushroom kingdom is roughly 1/5th of that on earth, gmk

Answers

The time taken by Super Mario is 2.91 seconds to reach the mystery block.

To find the time it takes for Super Mario to reach the mystery block, we can use the kinematic equation:

∆y = v0t + (1/2)at2

Where ∆y is the change in a vertical position, v0 is the initial vertical velocity, a is the acceleration due to gravity, and t is the time.

Since the mystery block is 8.2 m above Mario's head, ∆y = 8.2 m. The initial vertical velocity, v0, is 0 m/s since Mario is starting from rest. The acceleration due to gravity in the Mushroom Kingdom, gmk, is 1/5th of that on Earth, so

a = (1/5)g = (1/5)(9.8 m/s2)

a = 1.96 m/s2.

Plugging these values into the equation, we get:

8.2 m = (0 m/s)t + (1/2)(1.96 m/s2)t2

Simplifying and rearranging, we get:

t2 = (8.2 m)/(0.98 m/s2)

Taking the square root of both sides, we get:

t = √((8.2 m)/(0.98 m/s2)) = 2.91 s

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Who experiences MORE force in her glove during a softball game, the catcher or the outfielder? Defend your answer. Use FΔT=mΔv in your explanation.

Answers

The catcher experiences more force in her glove during a softball game than the outfielder during a softball game.

What is force?

The definition of force in physics is: The push or pull on a massed object changes its velocity. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. A spring balance can be used to calculate the Force. The Newton is the SI unit of force.

Given that: the equation of motion is: FΔT=mΔv

Hence, Force = mass × change in velocity/time interval.

Now, during a softball game, the ball is in air more for the outfielder than the catcher. Hence, from the given equation, the catcher experiences more force in her glove during a softball game than the outfielder.

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Rich

duPont Manual Highschool

Proffit

Peregrine falcons frequently grab prey birds from the air, as BI0 in Example 9.10. Sometimes they strike at high enough speeds that the force of the impact disables prey birds. A 480 g per- egrine falcon high in the sky spies a 240 g pigeon some dis- tance below. The falcon slows to a near stop, then goes into ve-called a stoop-and picks up speed as she falls. The n reaches a vertical speed of 45 m/s before striking the pigeon, which we can assume is stationary. The falcon strikes the pigeon and grabs it in her talons. The collision between the falco birds lasts 0.015 s. a. What is the final speed of the falcon and pigeon? b. What is the average force on the pigeon during the impact?

Answers

A) 30 m/s

The problem can be solved by using the law of conservation of momentum. In fact, the total momentum falcon+pigeon before the collision must be equal to the total momentum falcon+pigeon after the collision:

$p_i = p_f$

$m_f u_f + m_p u_p = (m_f + m_p) v$

where

mf = 0.480 g is the mass of the falcon

uf = 45 m/s is the initial velocity of the falcon

mp = 0.240 g is the mass of the pigeon

up = 0 is the initial velocity of the pigeon

v is the final combined velocity of pigeon+falcon

Solving the equation for v, we find

$p=(m_f u_f)/(m_f +m_p)=((0.480 kg)(45 m/s))/(0.480 kg+0.240 kg)=30 m/s$

B) 480 N

The average force on the pigeon during the impact is given by

$F=(\Delta p)/(\Delta t)$

where

$\Delta p$ is the change in momentum of the pigeon

$\Delta t$ is the duration of the collision

here we have:

- Change in momentum of the pigeon:

$\Delta p = m (v-u)=(0.240 kg)(30 m/s-0)=7.2 kg m/s$

- Duration of the collision:

$\Delta t=0.015 s$

So the average force is

$F=(7.2 kg m/s)/(0.015 s)=480 N$

Final answer:

To determine the final speed of the falcon and pigeon, we need to use the principles of conservation of momentum. To calculate the average force on the pigeon during the impact, we can use the equation for impulse. The primary topic of this question is conservation of momentum and impulse.

Explanation:

To determine the final speed of the falcon and pigeon, we need to use the principles of conservation of momentum. Since the pigeon is assumed to be stationary, its initial momentum is zero. The final momentum of the falcon and pigeon combined must also be zero, according to the law of conservation of momentum. Using the equations for momentum and rearranging, we can solve for the final speed of both the falcon and pigeon.

To calculate the average force on the pigeon during the impact, we can use the equation for impulse, which is the change in momentum. Impulse is equal to force multiplied by the time of impact. Rearranging the equation, we can solve for force.

Learn more about Conservation of Momentum and Impulse here:

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Scientist infer that most of earth earliest atmosphere was produced by?

Answers

Scientists infer that most of Earth earliest atmosphere was produced by the escape of gases from Earth's molten surface. Once these gases were released from the very hot surface that covered the Earth, the earliest stages and levels of the atmosphere we know today were created. Many of those earliest gases still make up our atmosphere today.Hope this helps. Let me know if you need additional help!

Explanation:

Earth shaped through a method of accretion -collision of rocks and dirt particles, that step by step shaped a bigger and bigger object. These impacts generated loads of warmth, therefore early Earth would are a hot and desolate place. Vapour is assumed to own shaped a steam atmosphere, and incoming iron-rich rocks colliding with Earth would have reacted with a number of this water to provide rise to H gas.

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true or false the Richter scale describes the effects of an earthquake on people, buildings, and land at a given location.

How strong does an earthquake have to be to cause a tsunami

Astronauts traveling toward Earth in a fastmovingspacecraft receive a radio signal from anantenna on Earth. Compared to the frequencyand wavelength of the radio signal emitted fromthe antenna, the radio signal received by theastronauts has a(1) lower frequency and a shorter wavelength(2) lower frequency and a longer wavelength(3) higher frequency and a shorter wavelength(4) higher frequency and a longer wavelength