A Vertical Spring Is Compressed And, When Released, Applies a Force

Multiple Choice

A vertical spring is compressed and, when released, applies a force during a 0.25 s time interval to a 17 g frog, which is flung upward due to the applied force from the spring. If the frog attains an upward velocity of 11 m/s after being released from the spring, what average upward force was applied by the spring?

A) 0.21 N
B) 0.91 N
C) 0.75 N
D) 0.17 N
E) 0.58 N