17. Restraint devices are designed to ________________. a)improve posture b)prevent heart attacks c) provide decoration d) protect occupants during a collision
18. The second collision occurs when ________________. a) another vehicle hits the first two b) a drunk driver is allowed to drive again c) the occupants hit the inside of the car or their restraint device after a collision d) a train hits two cars
19. A restraint device that provides protection without having to be handled by the occupant is called ___________________. a) a loser's restraint b) an active restraint c) a useless restraint d)a passive restraint
20. A car going uphill works _________________. a) more easily than a car going downhill b)against the force of gravity c) with less gas d) using the force of inertia
