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3 years ago

half life, for my physics but pretty sure it involves maths. you don’t have to do them all i’m just confused how to work it out.

Physics

1 answer:

s2008m [1.1K]3 years ago

7 0

Answer:

according to me I take life as one and now when we are talking about half-lives divide 1 by 1/2 to get two lives

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2. What is the momentum of a football of mass 500g traveling at a

Mama L [17]

Answer:

5000 ns

Explanation:

hope this helps

5 0

3 years ago

A 500 kilogram roller coaster starts from rest at the top of an 80 meter hill.What was its speed at the bottom at the hill?

GarryVolchara [31]

m = mass of the roller coaster = 500 kg

h = height of the hill = 80 m

v = speed of the roller coaster at the bottom of the hill = ?

using conservation of energy

kinetic energy at the bottom of the hill = potential energy at the top of hill

(0.5) m v² = m g h

(0.5) v² = g h

inserting the values

(0.5) v² = (9.8) (80)

v = 39.6 m/s

hence the speed at the bottom comes out to be 39.6 m/s

3 0

3 years ago

I need help thank you

Brums [2.3K]

Answer:

Explanation:

3 0

3 years ago

A 1.0 kg cart moving right at 5.0 m/s on a frictionless track collides with a second cart moving at 2.0m/s. The 1.0 kg cart has

____ [38]

Answer:

m₂ = 3kg

Explanation:

The question wasn't clear about what direction the initial velocity of the second cart was, so I'll assume it was going left at 2.0m/s.

Anyway, this is a conservation of momentum problem. The equation you need to use is the one written in blue. They want you to solve for the mass of the second cart, so do some algebra and rearrange that blue equation in term of m₂.

Now that you have the equation for m₂, plug in all the values given from the question and you'll get 3kg.

3 0

4 years ago

Please solve the Problem.

babymother [125]

From the graph, the average acceleration between 5.0 s and 8.0 s is 2.33 ms^2.

<h3>What is acceleration?</h3>

The term acceleration has to do with the change in velocity with time. We can see that the graph shown is a graph of velocity against time, the slope of the graph is the acceleration.

Thus, the average acceleration between 5.0 s and 8.0 s can be read off from the graph as 20 m/s - 13m//8.0 s - 5.0 s = 2.33 ms^2.

Learn more about acceleration:brainly.com/question/12550364

#SPJ1

8 0

2 years ago