If a car travels down the highway at a constant speed, are the forces acting on the car balanced or unbalanced?

Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e