If a 70g swimmer pushes off a pool wall with a force of250n, what is her acceleration?
Use the equation F = m a
That is the same as a = F/m
a is the acceleration.
The mass (m) should be in kg to get the acceleration in m/s^2.
To find the acceleration of the swimmer, we can use Newton's second law of motion, which states that the acceleration of an object is equal to the net force acting on it divided by its mass.
Step 1: Determine the mass of the swimmer.
Given that the swimmer's mass is 70g, we need to convert it to kilograms (kg) since SI units are used in physics.
1 kg = 1000 g
Therefore, the mass of the swimmer is 70g / 1000 = 0.07 kg.
Step 2: Find the acceleration.
Using Newton's second law formula, which is a = F / m, where a is the acceleration, F is the force, and m is the mass.
Substituting the given values, we have:
a = 250 N / 0.07 kg = 3571.43 m/s².
Therefore, the swimmer's acceleration is 3571.43 m/s².