1
1 mark
1 markWhich of the following is an example of a scalar quantity?
displacement
energy
momentum
velocity
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Motion
11 mark
1 markA ball was dropped from rest, from a height above the ground. The ball bounced back up to about half its initial height.
Which graph shows how the velocity v of the ball varied with time t ?
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21 mark
1 markA trapdoor is fixed to a vertical wall with a hinge. A wire is attached to the other end of the trapdoor and inclined at an angle of 60°, as shown. The wire holds the trapdoor horizontal.
Which of the following shows the free-body force diagram for the trapdoor?
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