An Object with a Rest Mass Of $0.456 - \mathrm { kg }$

Multiple Choice

An object with a rest mass of $0.456 - \mathrm { kg }$ is moving at $1.20 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s }$ . What is the magnitude of its momentum? $\left( c = 3.00 \times 10 ^ { 8 } \mathrm {~m} / \mathrm { s } \right)$

A) $5.47 \times 10 ^ { 7 } \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
B) $5.67 \times 10 ^ { 7 } \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
C) $5.97 \times 10 ^ { 7 } \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
D) $5.57 \times 10 ^ { 7 } \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$
E) $5.87 \times 10 ^ { 7 } \mathrm {~kg} \cdot \mathrm { m } / \mathrm { s }$