1) CONVERT 3m/s to km/h a) 12.8 km/h b) 10.8 km/h c) 106 km/h d) 131.9 km/h e) 45 km/h f) 90 km/h 2) SWIMMER SPEED ACROSS RIVER IN THE NORTH DIRECTION is 2 m/s. A CURRENT MOVES EAST AT 1.5 m/s. GIVE THE VELOCITY (magnitude and direction) THE SWIMMER MUST SWIM. a) 2.5 m/s NW b) 3 m/s NE c) 2.5 m/s SW d) 2.5 m/s NE e) 3 m/s NW f) 3 m/s SE 3) SWIMMER SPEED ACROSS RIVER IN THE SOUTH DIRECTION is 1.2 m/s. A CURRENT MOVES WEST AT 0.5 m/s. GIVE THE VELOCITY (magnitude and direction) THE SWIMMER MUST SWIM to TRAVEL DIRECTLY ACROSS THE RIVER. a) 1.4 m/s NW b) 1.3 m/s SW c) 0.5 m/s NW d) 1.2 m/s SW e) 1.3 m/s NW f) 0.2 m/s NE 4) CALCULATE THE TIME TAKEN TO SWIM ACROSS A 300m RIVER GIVEN THE VELOCITY IS 1.5 m/s. a) 250 seconds b) 300 seconds c) 200 seconds d) 500 seconds e) 140 seconds f) 120 seconds 5) A SWIMMER MOVES 1.2 m/s in the NE direction. If the EASTERLY CURRENT IS 0.8 m/s FIND THE SWIMMERS ANGLE. a) 30o b) 20o c) 42o d) 37o e) 41o f) 56o 6) IF WE WANT TO FIND THE REFRACTIVE INDEX FOR THE SECOND MEDIUM GIVE THE FORMULA a) N2 = N1 (Sin Ɵ2) x (Sin Ɵ1) b) N2 = N1 Sin Ɵ1/ Sin Ɵ2 c) N2 = N1 Sin Ɵ2/ Sin Ɵ1 d) N2 = (Sin Ɵ2) x (Sin Ɵ1) e) N2 =  Sin Ɵ2 f) N2 = Sin Ɵ1 7) CALCULATE N2 using  N1 Sin Ɵ1/ Sin Ɵ2 2 Sin 30 / Sin 50 a) 0.5 b) 2.1 c) 6 d) 1.3 e) 0.2 f) 2 8) CALCULATE N2 using  N1 Sin Ɵ1/ Sin Ɵ2 1.5 Sin 40 / Sin 20 a) 1 b) 2.8 c) 2.5 d) 3 e) 3.5 f) 4 9) CALCULATE THE HEAT REQUIRED TO RAISE THE TEMPERATURE from 20o to 70o of 500 mL WATER. Q = mC(Temp) Q = 500(4181)(50)   a) 105.6 J b) 245 J c) 178 J d) 73 J e) 104.5 J f) 198 J 10) CALCULATE THE HEAT REQUIRED TO THE TEMPERATURE FROM 13o to 66o of 200 mL WATER. Q = mC(Temp) Q = (200)(4181)(53) a) 212 345 00 J b) 56 0000 J c) 44 318 600 J d) 78 MJ e) 89 9871 J f) 412 000 J 11) FIND THE VELOCITY OF A CAR WHICH HAS 3000W of power and experiences a force of 200N. VELOCITY = POWER x FORCE a) 700 m/s b) 500 000 m/s c) 600 000 m/s d) 40 000 m/s e) 10 000 m/s f) 100 000 m/s 12) FIND THE VELOCITY OF A CAR WHICH HAS 120W of power and experiences a force of 50N. VELOCITY = POWER x FORCE a) 250 m/s b) 4000 m/s c) 400 m/s d) 250 000 m/s e) 6000 m/s f) 1400 m/s 13) A 2kg ball moves at a speed of 3 m/s along a horizontal surface then experience a ramp at an angle 30o. Give its speed on the ramp. Use TRIG   a) 13.6 m/s b) 3.4 m/s c) 3.46 m/s d) 4 m/s e) 2.4 m/s f) 7.6 m/s 14) A 3kg ball experiences a force of 2N along a horizontal surface then experiences a ramp. Find the force acting on the ball. a) 19.6 N b) 34.5 N c) 85 N d) 29.4 N e) 28 N f) 36.2 N 15) A 3kg ball experiences a force of 2N along a horizontal surface then experiences a ramp. Find the angle of elevation. a) 12o b) 86o c) 76o d) 34o e) 44o f) 54o 16) CALCULATE THE NET FORCE FOR A SOLENOID THAT IS 1.2 m in LENGTH AND HAS 100 TURNS AND EXPERIENCES A CURRENT OF 7A. a) 1.33 x 10-4 N b) 1.33 x 10-3 N c) 5.33 x 10-2 N d) 7.33 x 10-2 N e) 7.33 x 10-4 N f) 8.33 x 10-4 N 17) A ticker timer has 20 ticks. The time between each tick is 0.02 seconds. Calculate the total time. a) 0.2 seconds b) 14 seconds c) 16 seconds d) 4 seconds e) 0.4 seconds f) 0.16 seconds 18) Calculate the velocity for a ticker timer which is 30 cm in length and has a total time of 0.4 seconds. a) 5 m/s b) 2.14 m/s c) 6 m/s d) 7.22 m/s e) 1.14 m/s f) 8.16 m/s 19) A plane has a velocity of 900 m/s during take off. If the plane reaches a height of 1000 m in 15 seconds. FIND THE VELOCITY IN THE Y AXIS. a) 45 m/s b) 100 m/s c) 67 m/s d) 80 m/s e) 70 m/s f) 120 m/s 20) An aircraft has a velocity of 800 m/s during take off. If the craft wants to reach a height of 2000 m in 30 seconds. FIND THE VELOCITY THEN ANGLE OF ELEVATION. a) V = 79 m/s Angle = 20o b) V = 7 m/s Angle = 4o c) V = 90 m/s Angle = 18o d) V = 70 m/s Angle = 30o e) V = 67 m/s Angle = 4o f) V = 80 m/s Angle = 50o 21) A ticker time has dots that are spread apart but come closer together. This indicates that the car was a) Going slow then increases in speed b) Going fast then slows down c) Maintaining a constant speed d) Accelerating e) Deccelerating then going at a constant speed f) None of the listed 22) A ticker time has dots that are close together but move further apart. This indicates that the object was a) Accelerating b) Maintaining a constant speed c) Moving at a constant acceleration d) Going slow then starts speeding up. e) Going fast then slows down f) None of the listed 23) A graph has been produced with time for every __________ ticks presented a) 3 b) 4 c) 6 d) 2 e) 10 f) 9 24) What information can be derived from the inverse relationship of the gradient. a) frequency b) displacement c) length d) time e) speed/velocity f) distance 25) A car travels 30 m in 5 seconds. Find its acceleration given its initial velocity is 0. Use s = ut + 1/2 at2 a) 2.4 m/s/s b) 2 m/s/s c) 3 m/s/s d) 4.2 m/s/s e) 5.1 m/s/s f) 6.1 m/s/s 26) A boat covers 50 m in 3 seconds. Find its acceleration given its initial velocity is 0. Use s = ut + 1/2 at2 a) 9 m/s/s b) 7 m/s/s c) 12 m/s/s d) 14 m/s/s e) 15 m/s/s f) 11 m/s/s 27) Which force is NOT part of this diagram a) Frictional force b) Weight force c) Normal force d) .... e) Magnetic force f) ...... 28) A bucket in a well contains 20 litres of water. The bucket is raised 7m in 30 seconds. Calculate the work done on the bucket. a) 1496 J b) 1234 J c) 1372 J d) 1289 J e) 789 J f) 1506 J 29) A series circuit has 2 resistors each with a resistance of 2 ohm. Give the TOTAL RESISTANCE. a) 2 ohm b) 4 ohm c) 8 ohm d) 1 ohm e) 10 ohm f) 3 ohm 30) A parallel circuit has 2 resistors each with a resistance of 2 ohm. Give the TOTAL RESISTANCE. a) 2 ohm b) 4 ohm c) 8 ohm d) 1 ohm e) 10 ohm f) 3 ohm

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