If a Rock Is Thrown Upward on the Planet Mars $12 \mathrm {~m} / \mathrm { s }$

question 90

Multiple Choice

If a rock is thrown upward on the planet Mars with a velocity of $12 \mathrm {~m} / \mathrm { s }$ , its height in meters $t$ seconds later is given by
$y = 12 t - 1.92 t ^ { 2 }$ Find the average velocity over the time interval $[ 2,3 ]$ .

• A) \(- 0.6 \mathrm {~m} / \mathrm { s }\)
• B) \(4.4 \mathrm {~m} / \mathrm { s }\)
• C) \(2.4 \mathrm {~m} / \mathrm { s }\)
• D) \(3.4 \mathrm {~m} / \mathrm { s }\)
• E) \(1.4 \mathrm {~m} / \mathrm { s }\)