A speedboat initially at rest accelerates uniformly at 4.0 m/s (squared) for 7.0 s. How fast is the boat moving after 7.0 s?

Answers

Answer 1

Answer: well if the boat initially at rest accelerates at uniformly at 4.0 m/s (squared) then it would be best to muitlply it so 4.0 squared equals 2 by multiplying that by 7.0 your answer would be 14 s

Related Questions

Which of the following is not accurate when describing solids? A. Solids are better conductors of heat than liquids B. The amount of pressure exerted by a solid is solely dependent on its mass. C. Solids with many air pockets are good insulators. D. Molecules in solids are closer together than molecules in liquids.
At which point on this electric field will a test charge show the maximum strength?ABCD
In a series circuit, each circuit element has the same:a.currentc.capacitanceb.voltaged.resistance
A bicyclist is in a 50-km race. He says he had an average velocity of 35. What is missing in the cyclist’s velocity? A. units only B. units and distance C. direction only D. units and direction
A scientific model is based on assumptions that limit where and how the model can be applied. True False

What happens when a wave reflects?a. They are absorbed by the object they hit.
b. They travel through the object they hit.
c. They bend when they hit the medium.
d. They bounce off the object they hit.

Answers

they bounce off just like sun rays when they heat the atmosphere they bounce off reflection

A train traveling at 82.8 kilometers per hour is blowing its horn as it approaches you. The horn has a frequency of 312 Hz. Assume the speed of the sound is 331 m/s. What is the observed frequency of the horn?335 Hz
312 Hz
292 Hz
412 Hz

Answers

The answer is 335 Hz.

To calculate this, we will use the following formula:
f₀ = f × v ÷ (v - v₁)
where:
f₀ - frequency heard
f - actual frequency
v - speed of sound
v₁ - speed of source

We know:
f = 312 Hz
v = 331 m/s
v₁ = 82.8 km/h = 23 m/s

We need:
f₀ = ?

f₀ = f × v ÷ (v - v₁)
⇒ f₀ = 312 Hz x 331 m/s ÷ (331 m/s - 23 m/s)
⇒ f₀ = 312 Hz × 331 m/s ÷ 308 m/s
⇒ f₀ = 335.3 Hz ≈ 335 Hz

Thus, the frequency of the horn is 335 Hz.

Answer:

335 Hz

Explanation:

100%

According to the exercise principle of balance, a workout should __________.a. address all components of fitness
b. focus on balance and coordination
c. target specific areas for improvement
d. vary exercise activities over time

Answers

a. address all components of fitness

According to the exercise principle of balance, a workout should address all components of fitness.
NOT:
b. focus on balance and coordination
c. target specific areas for improvement
d. vary exercise activities over time

According to the exercise principle of balance, a workout should:

a. address all components of fitness

Explanation:

The Balance Principle dictates that each one training should be properly proportioned so as to realize best results. This broad principle operates at several levels of human performance.
All things moderately apply to sports coaching moreover general health and well being
This principle suggests that the proper mixture of coaching activities, diet, and healthy way habits are needed for the best functioning

If 105 J of energy is used in 103 s, what is the average power consumption in watts?

Answers

Given : 105 J (Work)
103 s (time)

Unknown: P=?
Formula: P=W/t
Solution: P= 105 J/103 s = n

Answer: P= 1.02 J/s or watts is the average power

what can accurately be said about a resultant wave that displays both reinforcement and interference?

Answers

As the frequency of the waves increases, a greater number of wavelengths pass a given point per second. From the wave formula, we see that there is an indirect relationship between frequency and the wavelength. thus, as the frequency increases the wavelength decreases resulting to a smaller distance between the waves which will show greater number of wavelengths between waves.

Sound waves travel faster in: a. solids as compared to liquids. b. liquids as compared to gases. c. warm air as compared to cooler air. d. All of the above are correct.

Answers

Answer:

d all of the above are correct

Other Questions

Which memory disorder is a common illness on television and films

Two hikers are 15 miles apart and walking toward each other. They meet in 2 hours. Find the rate of each hiker if one hiker walks 2.3 mph faster than the other.

What is the mass of 1 cm³ of water

What is the speed of a 500 kg elevator that has 4000 J of energy ?