A Model Rocket Has Upward Velocity $v ( t ) = 60 t ^ { 2 } \frac { \mathrm { ft } } { \mathrm { s } }$

Multiple Choice

A model rocket has upward velocity $v ( t ) = 60 t ^ { 2 } \frac { \mathrm { ft } } { \mathrm { s } }$ , t seconds after launch. Use a Riemann sum with n = 10 to estimate how high the rocket is 4 seconds after launch.

A) 1094.4 feet
B) 921.6 feet
C) 1478.4 feet
D) 1267.2 feet
E) 960 feet