Answer:
Explanation:
Kinetic energy can be found using the following formula.
where <em>m</em> is the mass and <em>v</em> is the velocity.
The mass of the toy plane is 20 kilograms and the velocity is 10 meters per second.
Substitute the values into the formula.
Solve the exponent first.
- (10 m/s)²= 10 m/s *10 m/s= 100 m²/s²
Multiply the last two numbers together.
Multiply by 1/2 or divide by 2.
- 1 kilogram square meter per square second is equal to 1 Joule.
- Our answer of 1000 kg*m²/s² is equal to 1000 Joules
The kinetic energy of the toy plane is <u>1000 Joules</u>
The velocity of the ball is 12.5 m/s
Explanation:
The velocity of the ball is given by the ratio between the distance covered by the ball and the time taken:
First, we calculate the distance covered. We know that the radius of the circle is
r = 0.450 m
And the length of the circumference is
The ball makes 25.0 revolutions, so a total distance of
In a time of
t = 9.37 s
So, its velocity is
Learn more about velocity here:
brainly.com/question/5248528
#LearnwithBrainly
ON EARTH, every kilogram of mass weighs about 2.205 pounds.
So if you know the weight (in pounds), and you know that it was
weighed on Earth, you can simply divide the pounds by 2.205 ,
and you'll get the mass (in kilograms).
I can see that on this science homework, they used 2.2 for the weight
of 1 kilogram expressed in pounds. So just divide the weight by 2.2
to get the mass in kilograms.
(The weight number they gave you is not so random. :-) )
Answer is in the file below
tinyurl.com/wpazsebu
Answer:
<h3>F=2,111.9</h3>
F= two thousand one hundred eleven point nine
Explanation:
Force equals <em><u>Mass(kg)</u></em> times acceleration (M/s^2)
F=<em><u>m</u></em>a
F= <u><em>215.5</em></u> x 9.8
