Question

A 90.5 kg swimmer pushes off the pool wall with a force of 120.0 N, at what rate did the swimmer accelerate from the wall?

a) 1.32 m/s²
b) 2.09 m/s²
c) 3.12 m/s²
d) 4.27 m/s²

Answer 1

The rate of acceleration of the swimmer from the wall, after pushing off with a force of 120.0 N, is approximately 1.32 m/s², which corresponds to answer option (a).

Step-by-step explanation:

The student is asking about the acceleration of a swimmer after pushing off from a pool wall. Using Newton's second law of motion, acceleration (a) can be calculated using the formula a = F/m, where F is the force exerted by the swimmer and m is the mass of the swimmer. In this case, the swimmer pushes off with a force of 120.0 N and has a mass of 90.5 kg.

Plugging in the values, we get:

a = 120.0 N / 90.5 kg = 1.3254 m/s²

The rate of acceleration of the swimmer from the wall is therefore approximately 1.32 m/s², which corresponds to answer option (a).