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JulijaS [17]
3 years ago
10

NEED BOTH QUESTIONED ANSWERED ASAP.

Physics
1 answer:
Nana76 [90]3 years ago
8 0

Answer:

the answer is the red super giants

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57. Example of the law of force and acceleration
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Newton's Second Law of Motion says that acceleration (gaining speed) happens when a force acts on a mass (object). Riding your bicycle is a good example of this law of motion at work. Your bicycle is the mass. Your leg muscles pushing pushing on the pedals of your bicycle is the force.

Explanation:

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2 years ago
Differentiate between earthworm and housefly​
mash [69]

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Earthworm lives in the soil, eats the soil which has organic matter such as decaying vegetation or leaves and crawls. While housefly lives in dirty places, feeds on faeces and flies.

Hope I get a brainliest answer.

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3 years ago
Which of the following values represents an index of refraction of an actual material?
Airida [17]

The answer is <em>B. 5/4</em> or <em>1.25</em>

3 0
3 years ago
QUICK giving brainlyest
Soloha48 [4]

The momentum of the second ball was 15 kg.m/s.

<h3>What is inelastic collision?</h3>

In which collision some amount of kinetic energy of the system is lost that called inelastic collision. In purely inelastic collision, two bodies stick together. But principle of conservation of linear momentum is obeyed.

In the given question,

Two balls collide and after collision, the final momentum of the system = 18 kg.m/s.

Initial velocity of 1st ball of mass 3 kg is 1 m/s.

So, Initial momentum of first ball = mass × velocity = (3 kg) × (1 m/s) = 3 kg.m/s.

According to Principle of conservation of linear momentum for this inelastic collision,

Initial momentum of first ball + initial momentum of second ball =  final momentum of the system

⇒   initial momentum of second ball =   final momentum of the system - Initial momentum of first ball

= 18 kg.m/s - 3 kg.m/s.

= 15 kg.m/s.

Hence, initial momentum of second ball = 15 kg.m/s.

Learn more about momentum here:

brainly.com/question/24030570

#SPJ2

5 0
1 year ago
Read 2 more answers
A train travels 225 km in 2.5 hours. What is the trains average speed
Natalka [10]
90km per hour. Speed = distance÷time Speed= 225/2.5. Speed = 90Km per hour
5 0
2 years ago
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