Final answer:
The momentum of a 2000 kg truck traveling at 20 mi/hr, after converting the speed to meters per second, is calculated to be 17880 kg·m/s.
Step-by-step explanation:
To calculate the momentum of a 2000 kg truck traveling at 20 mi/hr, one must first convert the speed to meters per second (m/s) since the standard units for momentum in physics are kilogram meters per second (kg·m/s). To convert miles per hour to meters per second, use the conversion factor where 1 mi/hr is approximately equal to 0.44704 m/s. Therefore, 20 mi/hr is equivalent to about 8.94 m/s.
Momentum (p) is calculated using the equation p = mv, where m is mass and v is velocity. So, we can calculate the momentum of the truck as follows:
p = 2000 kg × 8.94 m/s
p = 17880 kg·m/s
Thus, the momentum of the 2000 kg truck traveling at 20 mi/hr is 17880 kg·m/s.