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3 years ago

An 8 kg toddler is running and using 400 J of kinetic energy. What is the velocity of the child

Mathematics

1 answer:

mojhsa [17]3 years ago

7 0

Answer:

10 m/s

Step-by-step explanation:

KE = 0.5mv^2

400 = 0.5(8)(v^2)

100 = v^2

v = 10 m/s

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Which function represents an exponential

Leviafan [203]

I think its A!! But im not sure

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3 years ago

Answer quickly! It very urgent

ra1l [238]

Answer: Because the graphs of the two equations overlap each other

Step-by-step explanation:

Every point on the first line also satisfies the second equation.

This is the same as equivalent fractions

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Graphing these on a number line would only show one dot.

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3 years ago

It takes Kay 20 minutes to drive to work traveiling 45 mph. Two minutes after she left home this morning, her husband, Dan, star

BARSIC [14]

Answer:

Kay's husband drove at a speed of 50 mph

Step-by-step explanation:

This is a problem of simple motion.

First of all we must calculate how far Kay traveled to her job, and then estimate the speed with which her husband traveled later.

d=vt

v=45 mph

t= 20 minutes/60 min/hour = 0.333 h (to be consistent with the units)

d= 45mph*0.333h= 15 miles

If Kay took 20 minutes to get to work and her husband left home two minutes after her and they both arrived at the same time, it means he took 18 minutes to travel the same distance.

To calculate the speed with which Kate's husband made the tour, we will use the same initial formula and isolate the value of "V"

d=vt; so

v= $\frac{d}{t}$

d= 15 miles

t= 18 minutes/60 min/hour = 0.30 h (to be consistent with the units)

v= $\frac{d}{t}=\frac{15 miles}{0.3 h}=50mph$

Kay's husband drove at a speed of 50 mph

8 0

3 years ago

Traders joes sold 7981 bags of tortilla chips recently. If 1178 of these bags were fat free find the percent that were fat free.

lawyer [7]

Answer:

14.76% of tortilla chips bag were fat free.

Step-by-step explanation:

We are given the following in he question:

Number of bags of tortilla chips sold = 7981

Number of bags hat were fat free = 1178

We have to find the percentage of bags that were fat free.

Percentage:

$\dfrac{\text{Number of fat free bags}}{\text{Total number of bags}}\times 100\%\\\\=\dfrac{1178}{7981}\times 100\%\\\\=14.76\%$

Thus, 14.76% of tortilla chips bag were fat free.

4 0

3 years ago

a basketball player has a 60% chance of making each free throw. what is the probability that the player makes exactly 8 out of 1

patriot [66]

8/10
Might be wrong tho

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3 years ago