Form 2 Track 2 Physics Worksheet - Annual Examinations For Secondary Schools, 2012 Page 3
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112.
A climber of mass 55 kg takes 40 s to reach the top of a 20 m climbing wall.
i.
Calculate the weight of the climber.
___________________________________________________________________
(2)
ii.
What is the minimum upward force she exerts while climbing the wall?
___________________________________________________________________
(1)
iii.
Calculate the work done by the climber to reach the top of the wall.
___________________________________________________________________
(2)
iv.
Calculate her power during this climb.
________________________________________________________________________________
(2)
v.
Explain why the climber uses chalk on her hands as she climbs the wall.
________________________________________________________________________________
(1)
3.a.
Underline the correct answer in each of the following:
i.
The Earth is a (planet / moon / star) orbiting the Sun.
ii.
The Earth has one natural satellite called the (International Space station / Hubble
telescope / moon).
iii.
The Sun is at the centre of our (solar system / universe / galaxy).
iv.
The nearest star to the Earth is (Sirius / Mars / the Sun).
v.
The Earth spins on its axis once every (12 / 24 / 36) hours.
vi.
One theory that suggests that the universe started from a big explosion is known as
(Supernova / Big Bang / Nuclear bomb).
(6)
b.
Complete the following:
i.
One light year is _____________________________________________________
________________________________________________________________________________
(1)
ii.
One advantage of exploring space is ______________________________________
________________________________________________________________________________
(1)
Physics – Form 3 Secondary – Track 2 – 2012
Page 3 of 11
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