I need help understanding a physics question: Question 42-46

Anonymous
timer Asked: Dec 15th, 2015
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mathexpert121
School: UT Austin

Thank you for the opportunity to help you with your question!

42. Force = mass * acceleration

acceleration = Change in velocity/ time  = 6.5/0.25 =26 m/sec^2

hence , Force = 120* 26.0 =3120 N

43. Impulse = Mass * velocity =0.06*74 =4.4 kg m/sec

44. Force = mass * acceleration

acceleration = Change in velocity/ time  = 18.5/0.12 =154.17 m/sec^2

hence , Force = 0.93 * 154.17 =143.375 N

45.  Force = mass * acceleration

acceleration = Change in velocity/ time  = 18.0/6.4*10^-2 = 281.25 m/sec^2

hence , Force = 1500 * 281.25 =421875 N



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