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Novay_Z [31]
3 years ago
5

Choose the answer choice that BEST completes the following sentence.

Physics
1 answer:
Genrish500 [490]3 years ago
6 0
I believe the coma is formed from the dust and gas from a comet.

Hope this helps!! :)
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What is the velocity of an object that has been in free fall for 2.5 s?
zvonat [6]

Answer: D. 25 m/s Downward

Explanation:

V = (g)(t)

V = (9.8 m/s²)(2.5)

V = 24.5 m/s

8 0
3 years ago
Which of these is an example of projectile motion?
Usimov [2.4K]

Answer:

the answer is d I'm pretty sure

8 0
3 years ago
a 91.5 kg football player running east at 3.73 m/s tackles a 63.5 kg player running east at 3.09 m/s. what is their velocity aft
Lesechka [4]

The final velocity is 3.47 m/s east

Explanation:

We can solve this problem by using the law of conservation of momentum. In fact, the total momentum of the two players before and after the collision must be conserved:

p_i = p_f\\m_1 u_1 + m_2 u_2 = (m_1+m_2)v

where:

m_1 = 91.5 kg is the mass of the first player

u_1 = 3.73 m/s is the initial velocity of the first player (we take east as positive direction)

m_2 = 63.5 kg is the mass of the second player

u_2 = 3.09 m/s is the initial velocity of the second player

v is their final combined velocity after the collision

Re-arranging the equation and substituting the values, we find:

v = \frac{m_1 u_1+m_2 u_2}{m_1+m_2}=\frac{(91.5)(3.73)+(63.5)(3.09)}{91.5+63.5}=3.47 m/s

So, their velocity afterwards is 3.47 m/s east.

Learn more about momentum:

brainly.com/question/7973509  

brainly.com/question/6573742  

brainly.com/question/2370982  

brainly.com/question/9484203  

#LearnwithBrainly

6 0
3 years ago
n a presentation about measuring mass, one of your classmates states, "Two objects of the same size will always have the same ma
Neporo4naja [7]
Answer:
The statement is not correct.

Reason:
If two objects have the same mass, their respective densities determine their volumes.
By definition,
density = mass/volume.
or volume = mass/density.

Therefore if two objects have the same mass, the mode dense object (with higher density) will occupy less volume than the other object.

4 0
3 years ago
Read 2 more answers
a car traveling in a highway brakes to a stop without skidding. what happens to its kinetic energy? can that energy be recovered
docker41 [41]

Answer:

A car traveling on a highway takes to stop without skidding. What happens to its kinetic energy? ... The energy goes to parts of the brakes. No, the energy can only be reused if there is a heat pump present

7 0
3 years ago
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