# S104 Exploring Science Lab Answers

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S104 Exploring science
Tutor-marked assignment
1
i the energy transfers and/or conversions that happen to a pole vault when vaulting start with the run up, this generates kinetic energy and then a vertical jump up. ii The pole bends and then straightens a lot of the kinetic energy becomes heat energy due to friction, as this happens the pole vaulter rises into the air, while pulling them selves towards the top of the pole. When the pole is nearly straight, the pole vaulter lets go of the the pole and travels over the bar. When the pole snaps back the stored elastic strain energy is transformed into the gravitational potential energy. iii once all of the upward motion has ceased. They would fall, and begin to build up speed again This is because
I am going to attempt to tackle this

due to gravity she her velocity increases but downwards into the pool

she starts at 0ms-1
9.8 m s−2 is the gravity force

¥ S = 4.7m
¥ U = 0ms-1
¥ V = ???ms-1
¥ A = 9.8ms-2
¥ T = N/A no idea/I don’t need the time or the mass

Vf2 = Vo2 + 2 * g *

Vf2 = 2 * 9.8 m/s2 * 4.7 m = 92.12 m2/s2

9.597916441

√(Vf2) = √ (92.12 m2/s2) => Vf = 9.60 m/s.

my final answer is 9.6 m/s

S104 Exploring science
Tutor-marked assignment
E = hf
E = hcT/b

hf = hcT/b f = cT/b

f = ((m/s)*K) / (mK) = 1/s = s^-1 = Hz

B
E=mc2
the Sun produces its energy by the conversion of matter into energy in its core E=mc2
Stars like the Sun live for around 10 billion years or more. but massive stars, die allot quicker because they burn massive amounts of nuclear fuel. Stars are giant nuclear reactors. In the center of stars, atoms are taken apart by allot of atomic collisions that change the atomic structure this then release allot of energy. This makes the stars’ super hot and bright. They may have a big mass but they use up allot of there energy quickly. they convert around 1million times as much mass per second as our sun.
Stars that are smaller than the Sun have even longer life spans. And the massive stars bigger than the sun have shorter life spans.

Y2 – Y1 X2 –X1 =