An object is given an initial velocity. What will happen to the object if no other forces act on it?

The object will slow down and eventually come to a stop.

The object will accelerate at a constant rate.

The object will move at a constant rate in a straight line.

The object will travel in an elliptical path forever.

Wo audio speakers are placed on a vertical rail. speaker a is placed at head-level while speaker b is place at some variable height, \delta yδy, above speaker a. both speakers receive simultaneous input from a sine-wave generator so the speakers each produce a pure sinusoidal sound wave with a wavelength of 0.531 meters. calculate the lowest height that speaker b can be placed above speaker a to produce a minimum of sound heard by person standing \delta x = 7.86δx=7.86 meters directly in front of speaker a.

The consumption of fossil fuels could be

Why should seat belts not be mandatory quick plz