Question

Padded dashboards in cars are safer in an accident than nonpadded ones because an occupant hitting the dash has:________.

(a) increased time of impact.
(b) decreased impulse.
(c) decreased impact force.
(d) a and b above.
(e) a and c above.

Answer 1

Padded dashboards in cars are safer in an accident because they decrease the impact force experienced by an occupant hitting the dash.

Step-by-step explanation:

Padded dashboards in cars are safer in an accident than nonpadded ones because they help decrease the impact force experienced by an occupant hitting the dash. The padding increases the time over which the force of impact acts, thereby reducing the force. This allows the occupants to experience a lower force and decreases the likelihood of injury.

Answer 2

(e) a and c above.

Step-by-step explanation:

Momentum can be defined as the multiplication (product) of the mass possessed by an object and its velocity. Momentum is considered to be a vector quantity because it has both magnitude and direction.

Mathematically, momentum is given by the formula;

`Momentum = Mass * Velocity`

The law of conservation of momentum states that the total linear momentum of any closed system would always remain constant with respect to time.

Padded dashboards in cars are safer in an accident than non-padded ones because an occupant hitting the dashboard of an automobile car has an increased time of impact and a decreased impact force because the force or shock experienced is high and happens rapidly over a short period of time, thus, the occupant has less time and velocity while absorbing the momentum of the car in the course of the collision.