Z. A force that gives a 8-kg objet an acceleration of 1.6 m/s^2 would give a 2-kg object an acceleration of
a. 0.2 m/s2
b. 0.4 m/s2
c. 1.6 m/s2
d. 6.4 m/s2

Explanation:

We need to find the acceleration of the 2 kilogram object. Let's complete this in 2 steps.

First, we can find the force of the first, 8 kilogram object.

According to Newton's Second Law of Motion, force is the product of mass and acceleration.

The mass of the object is 8 kilograms and the acceleration is 1.6 meters per square second.

Substitute these values into the formula.

Multiply.

Now,  use the force we just calculated to complete the second part of the problem. We use the same formula:

This time, we know the force is 12.8 kilograms meters per square second and the mass is 2 kilograms.

Substitute the values into the formula.

Since we are solving for the acceleration, we must isolate the variable (a). It is being multiplied by 2 kg. The inverse of multiplication is division. Divide both sides of the equation by 2 kg.

The units of kilograms cancel.

The acceleration is 6.4 meters per square second.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true