force and laws of motion test questions
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Newton's laws of motion consist of three physical law s that form the basis for classical mechanics. They describe the relationship between the forces acting on a body and its motion due to those forces. They have been expressed in several different ways over nearly three centuries, and can
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Answers:Acceleration , a = F / m = 15 / 6 = 2.5 m/s Speed after time t is : v = 10 = at t = 10 / 2.5 t = 4 s
Answers:Newton's 3rd law is that of conservation of momentum. If you look at two objects exerting forces on each other their equal and opposite forces with cancel each other out and you will be left with only the external forces on each object. But, since that momentum must remain constant than the derivative of that momentum (P') must be 0. (P')= ma because a=dv/dt and P=mv so P'=mv'
Answers:You must first find the average acceleration : since there is acceleration there is a net force being applied acceleration=[velocity(final) - velocity(initial)]/time a=(35-0)/3 a=11.67 m/s Force=mass * acceleration F=m*a F=706 kg * 11.67m/s F=8237 N (newtons)
Answers:Sorry, but I have NO idea. :/ http://answers.yahoo.com/question/index;_ylt=Ajy_.rt_e.3mIKm0SN5temfsy6IX;_ylv=3?qid=20090815234437AAsNJ7a it's important