Question

carefully read the chapter and watch the presentation video before taking the quiz. although you may have access to your textbook, you will not have time to look up answers to the quiz questions. you will be able to see correct answer for the quiz after the due date (monday morning). you will then be able to view the graded quiz under grades. assume g = 10 m/s² question 1 1 pts whenever the net force on an object is zero, its acceleration may be more than zero. may be less than zero. is zero. question 2 1 pts a 10 - n block and a 1 - n block lie on a horizontal frictionless table. to impart equal horizontal accelerations, we would have to push the heavier block with 10 times as much force. 1/10 as much force. an equal force. 10 squared or 100 times as much force. none of the above

Explanation:

Step1: Recall Newton's second law

Newton's second law is $F = ma$. When $F_{net}=0$, from $F_{net}=ma$, we have $0 = ma$. Since mass $m>0$, then $a = 0$.

Step2: Apply Newton's second law to the blocks

For the 1 - N block, its mass $m_1=\frac{F_1}{g}=\frac{1}{10}\text{ kg}$ (using $F = mg$). For the 10 - N block, its mass $m_2=\frac{F_2}{g}=\frac{10}{10}=1\text{ kg}$. According to $F = ma$, if $a_1=a_2$, and $F_1 = m_1a_1$, $F_2 = m_2a_2$, then $\frac{F_2}{F_1}=\frac{m_2a_2}{m_1a_1}$. Since $a_1 = a_2$, $\frac{F_2}{F_1}=\frac{m_2}{m_1}=\frac{1}{\frac{1}{10}} = 10$.

Answer:

Question 1: Is zero.
Question 2: 10 times as much force.