1) A value with magnitude only is a ________? a) scalar b) vector c) size d) direction 2) A value with magnitude and direction is a ____________? a) scalar b) vector c) size d) direction 3) Distance and speed are examples of _________ quantities a) scalar b) vector c) size d) direction 4) Force, displacement and velocity are examples of __________ quantities a) scalar b) vector c) size d) direction 5) Identify the answer with two vectors a) displacement, speed b) velocity, time c) energy, mass d) weight, acceleration 6) Identify the answer with two scalars a) displacement, speed b) velocity, time c) energy, mass d) weight, acceleration 7) The single force which has the same effect as the combination of all the different forces acting on an object is the ______________ _______________. a) net force b) resultant force c) average force d) instantaneous force 8) What is the unit of distance? a) mm b) cm c) m d) km 9) What is the unit of speed or velocity? (select all correct answers) a) m/s b) m s-1 c) m/s2 d) m s-2 10) State the equation which links distance, speed and time State the equation which links distance, speed and time a) s = vt b) a = (v-u)/t c) a = (v + u)/t d) d = vt 11) Define displacement a) The total distance travelled between two points b) the straight line distance between start and finish. c) The straight line distance between start and finish with a direction d) The total distance travelled between two points and a direction 12) Define velocity a) Change in distance divided by change in time b) Change in displacement divided by change in time c) change in velocity divided by change in time d) change in acceleration divided by change in time 13) State the equation which links acceleration, velocity and time State the equation which links distance, speed and time a) s = vt b) a = (v-u)/t c) a = (v + u)/t d) d = vt 14) On a velocity time graph, when the line falls below the x-axis it indicates that the object is … a) moving forwards b) moving backwards c) moving down d) moving up 15) On a velocity time graph an upwards sloping straight line represents … a) constant acceleration b) changing acceleration c) distance travelled d) displacement of object 16) On a velocity time graph a horizontal line represents … a) stationary object b) accelerating object c) object moving with constant velocity d) object that is moving upwards

S3 Dynamics 1

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