As you drive north on the highway at 65 miles per hour, the cars in the opposing lane are traveling south at 65 miles per hour. Do the cars in the opposing lane have the same speed as you do? Do they have the same velocity?

In Canada a speed limit sign says 70 kilometers per hour. What is the legal speed in miles per hour? In meters per second? And in feet per second?

While traveling out in the country at 20 meters per second, your car's engine (and brakes) stops working and you coast to a stop in 25 seconds. What was your average acceleration during the time after the motor shut off?