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Triss [41]
3 years ago
14

How much kinetic energy does a 4.50kg block with a speed of 5.00m/s have?

Physics
1 answer:
OLga [1]3 years ago
4 0

Answer:

56.25J

Explanation:

Kinetic energy = 1/2 mv^2

Where m = mass

v = velocity

Given m = 4.50kg

v = 5.00m/s

Kinetic energy = 1/2 x 4.50 x (5.00)^2

= 1/2 x 4.50 x (5.00 x 5.00)

= 1/2 x 4.50 x 25

Multiply through

= 112.5/2

= 56.25J

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How do stocks and bonds differ
Liula [17]

Answer:

Explanation:

Stocks give you partial ownership in a corporation, while bonds are a loan from you to a company or government. The biggest difference between them is how they generate profit: stocks must appreciate in value and be sold later on the stock market, while most bonds pay fixed interest over time.

3 0
3 years ago
Read 2 more answers
Calculate the average speed of a car stuck in<br> traffic that drives 15 km in 3 hours?
dusya [7]

Answer:

5km/h

Explanation:

Speed= distance/time

Speed=15/3

speed=5Km/h

7 0
2 years ago
A wave is traveling down a string at 15 m/s. A snapshot of the wave is shown in the figure below.
max2010maxim [7]

(a) Amplitude=1.5 m

Amplitude is the maximum distance from the mean (zero disturbance) position.Here amplitude= 1.5 m

(b) wavelength= 2 m

Wavelength is the length of one complete wave or distance traveled by a wave in a time equal to Time Period. Here wavelength= 2 m

(c) Frequency=7.5 Hz

using equation for wave velocity V= f λ

15= f (2)

f=7.5 Hz

so frequency=7.5 Hz

(d) Time period= 0.133 s

Time period= T= 1/f

T= 1/7.5

T=0.133 s

so time period=0.133 s

5 0
3 years ago
How much is two cups each in a partly of 9 divided in fraction form?
mars1129 [50]
From the questions very confusing but quite interesting
solution:
2÷9×9=2 that means the amount is two naira in my country
8 0
3 years ago
An arrow of mass 0.5kg so it has 25J of kinetic energy; find the speed of the arrow v = m/s​
miss Akunina [59]

Answer:

10 m/s

Explanation:

Use the kinetic energy formula:

KE=(1/2)mv^2

I always remember it as Kevin is half-mad, and very square.

25J = (1/2)*0.5kg*(v^2)

50J = 0.5kg*(v^2)

100J = v^2

v = 10 m/s

Check it:

KE = (1/2)*0.5*(10^2)

KE = 25J

yep, it's right!

4 0
3 years ago
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