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The first step in answering any question is to figure out what the question really means! Velocity is a term physicists use to describe not just speed, but speed in a particular direction. When we talk...

(ii) Air resistance is said to be negligible in the question and since air resistance would be the only horizontal force acting on the jet, the horizontal force is also 0. (1 mark) This results in the hor...

(i) The only force acting on the water jet is gravity which always acts vertically downwards so the force at Y, as well as every point between X and Y, is down.Simply writing "down" would still ...

Advantage- Computeried Tomography provides an image with greater resolution than ultrasound. (1 mark) It also produces a 3D image made from lots of individual slices which can be viewed from various diffe...

Work done= force x distance.Here we are told that the force is 140N. The braking distance of the bike is 24m. Therefore, work done is 140 x 24=3360 (2 marks) Joules.(1 mark)The units of work done are Joul...