Ecz Science grade 12 2015 paper 1

Ecz Science grade 12 2015 paper 1

A 4kg brick is dropped from the reaches the ground with a velocity of    1200 m/s.

B        43.6 m/s.

C        40 m/s.

D        34.6 m/s.

A machine with a velocity ratio of 6 requires 800. through a vertical distance of km.

Find the mechanical advantage of the machine.

A        0.45

B        0.75

C        4.5

D        75.0

The common understanding of energy conservation is that it… A can be transformed from one form to another.

B        remains the same in all forms.

C        can be           destroyed.

D          can be            created.

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