1. A constant mass undergoes uniform acceleration when the resultant force acting on it
A is proportional to the displacement from a fixed point. B is proportional to the velocity. C is zero. D is constant but not zero. E increases uniformly with respect to time.
2. Two blocks, X and Y, of masses m and 2m respectively, are accelerated along a smooth horizontal surface by a force F applied to the block X, as shown in the diagram.
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What is the magnitude of the force exerted by block Y on block X during this acceleration?
A 0 B F/3 C F/2 D 2F/3 E F
3. The e.m.f. Eb of a battery is given by Eb = P/I where P is the power dissipated when a current I flows. The e.m.f. Ec induced in a coil by a changing magnetic flux is equal to the rate of change of flux, Ec = dΦ/dt. Which of the following is a unit for magnetic flux?
A m s-1 A B m s-2 A-1 C kg m2 s-2 A D kg m s2 A-1
E kg m2 s-2 A-1 4. A puck on a frictionless surface collides with a stationary puck. The pucks move as shown in the diagram.
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If the mass of the puck moving before the collision is 0.30 kg, what is the mass of the second puck
A 0.20 kg B 0.28 kg C 0.40 kg D 0.49 kg E 1.0 kg
5. A small ball of weight W is suspended by a light thread. When a strong wind blows horizontally exerting a constant force F on the ball, the thread makes an angle θ to the vertical as shown in the diagram.
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Which of the following equations correctly relates θ, F and W?
A cos θ = F/W B cos θ = W/F C sin θ = F/W D tan θ = F/W E tan θ = W/F
6. A linear accelerator sends a charged particle along the axis of a set of coaxial hollow metal cylinders as shown in the diagram.
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The particle travels at constant speed inside each cylinder. The particle crosses the gaps between the cylinders at equal time intervals, and at each gap its