An ice skater with a mass of 52.5 kg is gliding across a smooth lake with a speed of 2.25 m/s when she hits a spot of ice covered with snow. After a time of 7.55 s she has slowed to a stop. Using your knowledge of momentum, determine the magnitude of the average force of friction acting on the ice skater while she slows to a stop.

The magnitude of the average force of friction acting on the ice skater while she slows to a stop is 15.65 N

Explanation:

Given;

mass of the ice skater, m = 52.5 kg

speed of the ice skater, u = 2.25 m/s

time for her gliding, t = 7.55 s

To determine the magnitude of the average force of friction acting on the ice skater while she slows to a stop, we apply Newton's second law of motion;

F = ma

where;

F is average force of friction acting on the ice skater

v is the final speed speed of the ice skater = 0

u is the initial speed of the ice skater

t is time

Thus, the magnitude of the average force of friction acting on the ice skater while she slows to a stop is 15.65 N

no link

explanation:

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.