Question

1. which scenario would be studied by kinematics?

the forces applied to a person by an airbag
the effects of friction on car tires
the time it takes a car to stop after its breaks are applied
the effects of gravity on an orbiting spacecraft

Explanation:

Kinematics studies motion (position, velocity, acceleration, time) without considering forces.

• "Forces by airbag" involves forces (dynamics).
• "Friction effects" involves forces (dynamics, friction is a force).
• "Time to stop after brakes" focuses on motion (deceleration, time, displacement) – kinematics.
• "Gravity on spacecraft" involves force (gravity, dynamics).

Answer:

the time it takes a car to stop after its brakes are applied