Unit test: forces 9i 0.0 / 5 ? ScienceforcesYears 7-9 (KS3)None Created by: MaeGetsRevisingCreated on: 09-02-22 07:21 What are the units of force? Newtons (N) 1 of 15 What forces act on a cliff diver? Gravity + air resistance 2 of 15 When the resultant force is zero, we say an object is in... equilibrium 3 of 15 what is the equation for weight? weight = mass x gravitational field strength 4 of 15 what are the units for gravaitational field strength? Newtons per kilogramme, (N/kg) 5 of 15 what is relative motion? when two objects travelling in the same direction, fastest speed - slowest, if in opposite directions, add. 6 of 15 what is the equation for speed? speed = distance/time 7 of 15 what is the equation for calculating a moment? force (N) x distance(m) = moment (Nm) 8 of 15 When talking about pivots, what is the weight of the object called? the load 9 of 15 Give two examples of a force multiplier a lever, a ramp 10 of 15 Give two examples of distance multipliers a fishing rod, a cricket bat 11 of 15 we use levers and gears to transmit the ____ effect of the force from one place to another. rotational 12 of 15 what is the term in physics used for energy transfer? (and its unit) work, joules (J) 13 of 15 what is the equation for work? work = force x distance moved by the object 14 of 15 give an example of a class one, two and three lever. seesaw, wheelbarrow, stapler 15 of 15
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