Shelley the walrus is swimming at a speed of 1.8 m/s. Her kinetic energy is 1458 J.

Shelley the walrus is swimming at a speed of 1.8 m/s. Her kinetic energy is 1458 J.

Calculate Shelley’s mass. Use the symbol equation below to you. You may need to rearrange the equation.
Enter your answer as a number kg