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emmainna [20.7K]
3 years ago
5

What is the kinetic energy of a 50 kg dog running towards a ball with a velocity of 6 meters per second?

Mathematics
1 answer:
irga5000 [103]3 years ago
6 0

K.E. = 1/2 mv²

K.E. = 1/2* 50*(6)²

K.E. = 25*36 = 900 Joules

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Question 2
S_A_V [24]

Answer: B -8/7x+11/7

Step-by-step explanation:

First find the slope using teh formule y_{2}-y_1\\x_2-x_1 which is teh formula for slope in this case the slope would be (-8/7) then pick a pair of points in this case we will use (4,-3) plug in the slope and the coordinate pair into the intercept formula (y=mx+b) so it would look like -3=-8/7(4)+b then solve for b so the answer be 8/7x+11/7

7 0
3 years ago
Help please?!?!??!?!!!?!?!?!?!?!?!?!!?!?!?
marissa [1.9K]

Answer:

16.7%

Step-by-step explanation:

Probability is defined by the formula: the number of desirable outcomes over the total outcomes. The total number of outcomes is the sum of all shoes that he could possibly pick:

5 + 7 + 1 + 4 + 6 + 8 + 2 + 3 = 36

And the desirable outcomes are those where he picks brown boots, which is 6 outcomes.

Using the formula for probability, we get the expression: 6/36 to represent the probability. It simplifies to 1/6 which is about 16.7%

3 0
3 years ago
I need to know what this is lolololol thanks.
Jlenok [28]

Answer:

29/61

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
The box-and-whisker plot represents the lengths (in minutes) of movies being shown at a theater.
GaryK [48]

Answer:

20

Step-by-step explanation:

130-110

Q3-Q1=IQR

Hope this helps!

3 0
2 years ago
Read 2 more answers
Show that y=cos(t)y=cos(t) is a solution to (dydt)2=1−y2(dydt)2=1−y2. Enter your answers below in terms of the independent varia
GrogVix [38]

Answer:

(\frac{dy}{dt})^2=sin^2t

Step-by-step explanation:

y=cost

DE :(\frac{dy}{dt})^2=1-y^2

If y is a solution of given DE then it satisfied the DE.

Differentiate w.r.t t

\frac{dy}{dt}=-sint

Using the formula

\frac{d(cosx)}{dx}=-sinx

LHS:(\frac{dy}{dt})^2=(-sint)^2=sin^2t

RHS

1-y^2=1-cos^2t=sin^2t

By using the formula

sin^2t=1-cos^2t

LHS=RHs

Hence, y is a solution of given DE

(\frac{dy}{dt})^2=sin^2t

7 0
3 years ago
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