A car moving at a speed of 72 km / h, determine the acceleration of the car if it stops after 10 minutes.

The acceleration of movement at a given speed and time is found by the formula:

a = (v – v0) / t.

Let’s translate all known data into SI units:

v0 = 72 km / h = 20 m / s,

t = 10 min = 600 s.

Let’s find the acceleration:

a = (0 – 20) / 600 = -0.03 m / s².

Negative acceleration is a sign of uniformly slow motion, where the speed of movement gradually decreases.

Answer: a = -0.03 m / s².