devozeeba A bullet moves east at a velocity of 480 m∙s-1. It hits a wooden block that is fixed to the floor. The bullet takes 0,01 s to move through the stationary block and emerges from the block at a velocity of 80 m∙s-1 east. See the diagram below. Ignore the effects of air resistance. Consider … Read more
Stone A is thrown vertically upwards with a speed of 10 m∙s-1 from the edge of the roof of a 40 m high building, as shown in the diagram below. Ignore the effects of air friction. Take the ground as reference. 3.1 Define the term free fall. (2) 3.2 Calculate the maximum HEIGHT ABOVE … Read more
Block P, of mass 2 kg, is connected to block Q, of mass 3 kg, by a light inextensible string. Both blocks are on a plane inclined at an angle of 30°to the horizontal. Block Q is pulled by a constant force of 40 N at an angle of 25° to the incline. Block P moves … Read more
1.1 Which physical quantity is equal to the rate of change of momentum? A Mass           B Impulse C Net force D Acceleration          (2) 1.2 The gravitational acceleration on the surface of a planet of radius R is g. The gravitational acceleration at a height of 2R above the … Read more
10.1 Prove that: 10.2 Hence, or otherwise, prove that: [16] TOTAL: 150
PON is a diameter of the circle centred at O. TM is a tangent to the circle at M, a point on the circle. R is another point on the circle such that OR Il PM. NR and MN are drawn. Let ill = 66 0PON is a diameter of the circle centred at O. … Read more
[23]