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Q 1/13
Score 0
1 A train car moves along a long straight track. The graph shows the position as a function of time for this train. The graph shows that the train
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speeds up all the time.
slows down all the time.
speeds up part of the time and slows down part of the time.
moves at a constant velocity.
Q 2/13
Score 0
For question 2,3 and 4, refer to the same scenario as shown. A ball is thrown vertically up to a maximum height and falls vertically. Neglect air resistance.
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C
A
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13 questions
Q.
1 A train car moves along a long straight track. The graph shows the position as a function of time for this train. The graph shows that the train
1
30 sec
Q.
For question 2,3 and 4, refer to the same scenario as shown. A ball is thrown vertically up to a maximum height and falls vertically. Neglect air resistance.
2
30 sec
Q.
3 What force(s) acts on the ball when it is on its way up?
3
30 sec
Q.
5 While a train is moving horizontally at a constant speed, a person jumps vertically up in an enclosed carriage and lands back on the same spot on the carriage. Which of the following is the correct reason that explains this observation?
4
30 sec
Q.
7 Several forces of different magnitudes and directions act on a body to keep it at rest. If one of the forces slowly decreases to zero, then increases back to its original magnitude, keeping its direction fixed throughout, the speed of the body
5
30 sec
Q.
8 Consider an apple at rest on the ground. We can conclude that the downward gravitational pull of Earth on the apple and the upward contact force of Earth on it are equal and opposite because
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30 sec
Q.
9 Refer to the diagram as shown.
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30 sec
Q.
10 The men are in a tug-of-war, each pulling with a force of 100 N on opposite ends of a rope. What is the tension in the rope?
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30 sec
Q.
11 A massive block (m1) and a lighter block (m2) are juxtaposed on a smooth horizontal surface. We have a choice of pushing the blocks with a constant force F on either side. In which of the two cases below is the contact force between the two boxes larger?
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30 sec
Q.
12 Refer to the diagram as shown.
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30 sec
Q.
13 A rod of length 1 m has non-uniform composition, so that the centre of gravity is not its geometrical centre. The rod lies on supports across two top-pan balances as shown in the diagram below. The balances (previously set at zero with the supports) give readings of 360 g and 240 g.
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30 sec
Q.
15 An object falls freely from rest (point X) to the ground (point Z). What is the ratio of the kinetic energy of the object at Y to its kinetic energy at Z?
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30 sec
Q.
16 Three balls are thrown from a cliff with the same speed but at different angles. Neglecting air resistance, which ball has the greatest speed just before it hits the ground?
