Question

What is the momentum (in kg-m/sec) of a 910-kilogram car traveling north at 13.3 meters per second?

Answer 1

To find the momentum, we use the formula:

momentum = mass × velocity

First, we need to convert the mass from kilograms to grams:
910 kilograms = 910 × 1000 grams = 910000 grams

Then, we can calculate the momentum:
momentum = 910000 grams × 13.3 m/s = 12083000 grams-m/s

Since 1 kilogram is equal to 1000 grams, we can convert the momentum to kg-m/sec:
1 kg-m/sec = 1000 grams-m/sec

Therefore, the momentum of the car is 12083000/1000 = 12083 kg-m/sec.