Question

What speed would a fly with a mass of,0,55 g need

in order to have the same kinetic energy as the auto-
mobile in item 19?

Answer 1

To have the same kinetic energy as the automobile, the fly would need a speed of approximately 46.8 m/s.

Step-by-step explanation:

In order to calculate the speed of the fly, we need to find the kinetic energy of the automobile in item 19. The advertisement states that the 800-kg car has a kinetic energy of 675 kJ. We can use this information to calculate the speed of the fly.

First, we need to convert the kinetic energy from kilojoules to joules: 675 kJ = 675,000 J.

We can then use the equation for kinetic energy: KE = 0.5 * m * v^2, where KE is the kinetic energy, m is the mass, and v is the velocity.

Substituting the values into the equation, we have: 675,000 J = 0.5 * 0.55 g * v^2.

Solving for v, we find that the fly would need a speed of approximately 46.8 m/s to have the same kinetic energy as the automobile in item 19.