A good alternative to sit ups is<br><br> A. Crunches<br><br> B. Leg Raises<br><br> C. Side Twists

A rocket ship leaves Earth's atmosphere. Its initial velocity is less than its final velocity. What is this an example of?

77julia77 [94]

I believe this would be an example of positive acceleration as the initial velocity of the rocket is less than the final velocity, indicating that the rocket is accelerating and thus is positive.

6 0

3 years ago

Read 2 more answers

Please help me!

sergeinik [125]

C. The Densities are equal.

<h3>What is density?</h3>

Density is mass per unit volume or mass of a unit volume of a material substance.

If m1, V1 and D1 = mass, volume and density respectively of ball C

m2, V2 and D2 = mass, volume and density respectively of ball D

According to the Question ,

$V_{1} = 3V_{2} , m_{2} = \frac{1}{3} (m_{1} ) \\ \\= m_{1} = 3m_{2}$

Therefore,

$\frac{D_{1} }{D_{2} } = (\frac{m_{1} }{V_{1} } )* (\frac{m_{2} }{V_{2} } )\\ \\= (\frac{3m_{2} }{3V_{2} })*(\frac{V_{2} }{m_{2} }) \\\\= 1$

Hence, D1 = D2

Learn more about density here:brainly.com/question/15164682

#SPJ1

6 0

2 years ago

A series circuit has a combination of two resistors, one 7.25 ohm's and the other 4.50 ohm's.

zmey [24]

Answer:

11.75 ohms

Explanation:

since its series connection

R equivalent = R1 + R2 = 7.25 + 4.5

3 0

3 years ago

How does the force work

Oksana_A [137]

Answer:

A force is a push or a pull.

Explanation:

Example: A boy is pushing a box. He has to push the box to go forward or pull it to go backwards.

Hope this helped

4 0

3 years ago

How much energy is needed to change the temperature of 50g of water 15°c

zzz [600]

Explanation:

This question is not feasible. There is no way to calculate the energy needed because the question is missing the final temperature

7 0

2 years ago

A good alternative to sit ups is A. Crunches B. Leg Raises C. Side Twists