Solve the Problem $4.52 \times 10 ^ { 5 } \mathrm { ft }$

Multiple Choice

Solve the problem.
-At lift-off, a rocket weighs 40.0 tons, including the weight of fuel. It is fired vertically, and the fuel is consumed at the rate of 2.21 tons per 1,000 ft of ascent. How much work is done in lifting the rocket to an altitude of 14,000
Ft?

A) $4.52 \times 10 ^ { 5 } \mathrm { ft }$ ton
B) $4.16 \times 10 ^ { 5 } \mathrm { ft }$ ton
C) $3.43 \times 10 ^ { 5 } \mathrm { ft }$ ton
D) $7.77 \times 10 ^ { 5 } \mathrm { ft } \cdot$ ton