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05.03.2022 13:34
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Atomic History Reflection: Differentiate between the inner and outer structure of

Atomic History Reflection: Differentiate between the inner and outer structure of an atom and list the subatomic particles.​
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lowealiyah1055
lowealiyah1055
5,0(65 marks)
Hi hi hi hi hi hi hi
baegel
baegel
5,0(57 marks)

17.5 m/s

Explanation:

We are given that

Mass ,m=4500 kg

Initial speed,u=5 m/s

h_1=95.5 m

h_2=81.2 m

We have to find the speed of roller coaster cart at the top of the second hill.

According to law of conservation of energy

Change in kinetic energy=Change in potential energy

\frac{1}{2}mv^2-\frac{1}{2}mu^2=mg(h_1-h_2)

v^2-u^2=2g(h_1-h_2)

v^2=u^2+2g(h_1-h_2)

v=\sqrt{u^2+2g(h_1-h_2)}

v=\sqrt{5^2+2\times 9.8(95.5-81.2)}=17.5 m/s

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