Question

test information description instructions from the list of choices, select the one best answer. multiple attempts not allowed. this test can only be taken once. force completion this test can be saved and resumed later. your answers are saved automatically. question completion status: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 moving to another question will save this response. question 3 a girl is walking at 1.22 m/s. if the girl weighs 552 n, what is the magnitude of her momentum? hint: find mass first. 137 kg·m/s 97.0 kg·m/s 951 kg·m/s 68.6 kg·m/s 672 kg·m/s

Explanation:

Step1: Calculate the mass

We know that weight \(W = mg\), where \(g = 9.8\ m/s^{2}\). Given \(W=552\ N\), then \(m=\frac{W}{g}\).
\(m=\frac{552}{9.8}\approx56.33\ kg\)

Step2: Calculate the momentum

The formula for momentum is \(p = mv\). Given \(v = 1.22\ m/s\) and \(m\approx56.33\ kg\), then \(p=56.33\times1.22\)
\(p = 68.72\approx68.6\ kg\cdot m/s\)

Answer:

68.6 kg·m/s