(Remember: Use the final velocity formula) A vehicle is approaching a stop light. The vehicle slams on their
breaks and begins to decelerate at -2.5 m/s2. It takes the car 4 seconds to come to a near stop. The car had an
initial velocity of 12 m/s. Determine the car's final velocity.

Contrast the force of gravity between these pairs of objects a 1 kg mass and a 2 kg mass that are 1 m apart and two 2 kg masses that are 1 m apart

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.

What is the measure of a change in an objects velocity?