\( \left. \begin{array} { r } { 620 } \\ { 9 } \end{array} \right. \)

2. Um objeto é acelerado a \( 6 \mathrm{~m} / \mathrm{s}^{2} \) sua massa é de 200 kg . Determinie a distôn- cia pecornida sabendo que a energia necessaria foi 9.6 kj

Consider the following position functions \( r \) and \( R \) for two objects. a. Find the interval \( [c, d] \) over which the \( R \) trajectory is the same as the \( r \) trajectory over \( [a, b] \) b. Find the velocity of both objects. c. Graph the speed of the two objects over the intervals \( [a, b] \) and \( [c, d] \) respectively. For graphing, lot \( c=1 \) and \( d=20 \). \( r(t)=\left\langle 4+t^{2}, 4-4 t^{4}, 3+3 t^{4}\right\rangle,[a, b]=[0,5] \) \( R(t)=\left\langle 4+\ln t, 4-4 \ln ^{2} t, 3+3 \ln ^{2} 1\right\rangle \), on \( [c, d] \) a. The interval is \( \square \) (Simplify your answers.)

4. En el siguiente sistema de restricciones \( x+2 y \leq 500 \) \( 2 x+y \leq 400 \) \( y \leq 225 \) Uno de los puntos de corte que se ubica en los limites del espacio solución es

2. Calculate the mean, median, mode and range of each of the following sets of numbers:

If 4 moles of \( \mathrm{H}_{2} \) reacts with 2 moles of \( \mathrm{O}_{2} \), how many moles of water would be formed? 2 4