3) Tom Brady throws a touchdown pass at an initial speed of 60 miles/hour (mph).

Question

3) Tom Brady throws a touchdown pass at an initial speed of 60 miles/hour (mph). When the ball was released, it's initial velocity made an angle of 45° with respect to the ground. Assume that the NFL football has a mass of 400 grams, and is properly inflated. Question: Calculate the magnitude of the ball's total linear momentum, its linear momentum in the x-direction (Ps), and its linear momentum in the y-direction(P). when the ball was released. a) p = 10.9 kg·m/s; px = 7 kgem/s: p,-9 kg·m/s b) p-10.73 kg·m/s; p.-7.59 kg·m/s; p,-7.59 kg·m/s c) p= 1073 kg·m/s p,-759 kg·m/s py-759 kgem/s d) none of the above answers. 4) Which of the following objects has the greatest momentum, a 1000 kg small car moving at 10 m/s, a 1 kg artillery shell shot at 10 times the speed of sound (the speed of sound is 330 m/s), or an electron with mass m = 1.6 x 10-31 kg moving at a speed of 2.2 x 106 m/s? Rank the momentum values from highest to lowest. Choose from the closest answer below a) P(electron) > P(car) > P(shell); b) P(car) > P(shell)> P(electron); or c) P[shell)> P(electron)> P(car)

Explanation / Answer

Solving 3rd question

Velocity=60 mph=26.82 m/s

Horizontal velocity=26.82cos(45)=18.96 m/s

X momemtum=m*18.96=7.58 kg.m/s

Y momentum=m*18.96=7.58 kg.m/s

Total momentum=7.58*sqrt(2)=10.728 kgm/s

So option (b) is correct

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