# G484 Module 1 Newtons Laws and Momentum Questions

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1. State Newton’s second and third laws of motion. In your answer, you should use appropriate technical terms spelled correctly. (i)second law........................................................................................................................................................................................................................................................................................................................................................................... [1]  (ii)third law........................................................................................................................................................................................................................................................................................................................................................................... [1][Total 2 marks]  2. Most cars are now fitted with safety airbas. ! rin a s dden im#act\$ a trierin mechanism fires an amm nition cartride that ra#idly releases nitroen as into the airba.%n a #artic lar sim lated accident\$ a car of mass &'' k is traellin towards a wall.  st before im#act\$ the s#eed of the car is *2 m s  +1 . %t rebo nds at two,thirds of its initial s#eed.The car takes '.-' s for the car to come to rest. ! rin the crash\$ the car’s airba fills # to a maim m ol me of *./ 0 1'  +2  m *  at a #ress re of 1.' 0 1' -  a. The tem#erat re inside the airba is 2' 3. 3alc late4(i)the chane in the moment m of the car moment m chane 5 ............................................................ [2]  Ambrose College1   (ii)the manit de and direction of the aerae force actin on the car d rin im#act.force 5 .........................................................N [2] direction4........................................................................................................... [1]  (iii)the mass of nitroen inside the cartride.Molar mass of nitroen 5 '.'1/ k mol  +1 mass 5 .....................................................k [*][Total & marks]  Ambrose College2   3.  6 cricketer throws a cricket ball of mass '.17 k.(a)The fi re below shows how the force on the ball from the cricketer’s hand arieswith time. The ball starts from rest and is thrown hori8ontally. 2-2'1-1'-'.' '.1 '.2 '.*'./time 9 sforce 9 N  (i):stimate the area nder the ra#h.area 5 ...................... Ns [1]  (ii)The area nder the ra#h re#resents a chane in a #hysical ; antity for theball.State the name of this ; antity................................................................................................................ [1]  (iii)3alc late the s#eed of the ball\$ mass '.17 k\$ when it is released.s#eed 5 ...................... m s  +1 [2]  Ambrose College3  (i)3alc late the maximum hori8ontal acceleration of the ball.acceleration 5 ...................... m s  +2 [2]  (b)The ball bo nces seeral times on a hard s rface. The maim m heiht to which it rises after each bo nce is ien in the table below.bo nce n mber\$ n maim m heiht\$ h/ m1'.<12'.***'.17The data ien in the table fit a relationshi# for the ariation in maim m heiht with bo nce n mber of the form h 5 1.- e  + kn where k is a constant. (i)State the name of this form of relationshi#................................................................................................................ [1]  (ii)3alc late the al e of k.k 5 ................... [2]  Ambrose College4

Jul 23, 2017

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Jul 23, 2017
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