Final answer:
It is true that acceleration can be measured in units like m/s², mi/hr/sec, cm/s², and km/hr/m. The SI unit for acceleration is m/s², but others are also used, and they reflect the change in velocity over time.
Step-by-step explanation:
To answer the question regarding acceleration units, it is true that acceleration can be measured in different units of measurement depending on the context, including m/s2 (meters per second squared), mi/hr/sec (miles per hour per second), cm/s2 (centimeters per second squared), and km/hr/m (kilometers per hour per minute). While the SI unit for acceleration is m/s2, other units can also be used. For example, 1 m/s2 is equivalent to 100 cm/s2, and 1 mi/hr/sec is approximately 1.467 ft/s2. These units reflect a change in velocity over time.
Remember that acceleration is a vector quantity, therefore it not only has magnitude but also direction. It's essential to use consistent measurement units when working with acceleration to ensure accurate calculations and understanding. Deceleration refers to acceleration in the direction opposite of the velocity. It is important when measuring acceleration, such as when calculating the deceleration of a car coming to a stop, to use correct and consistent units.