Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each other on a horizontal surface. Both balls travel with a constant speed of 5 m/s until they collide. During the collision, ball Y exerts an average force with a magnitude of 40N for 1/6s on ball X . Which of the following best predicts ball momentum after the collision?
A Ball Y will travel at a speed less than 5 m/s in the same direction of travel as before the collision.
B Ball Y will travel at a speed less than 5 m/s in the opposite direction of travel as before the collision.
C Ball will travel at a speed greater than 5 m/s in the same direction of travel as before the collision.
D Ball Y motion cannot be predicted because the impulse on it is not known.
Answers: 2
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Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.
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Ball X of mass 1.0 kg and ball Y of mass 0.5kg travel toward each other on a horizontal surface. Bot...
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