What is inertia?(1 point)
Responses
an object’s resistance to a change its motion
an object’s resistance to a change its motion
the speed and direction of an object in motion
the speed and direction of an object in motion
the motion of an object
the motion of an object
a force that acts on an object at rest
an object’s resistance to a change its motion
A balloon floats inside a stopped car. When the car starts moving forward, the balloon appears to move backward relative to the car. Which statement best explains this observation?(1 point)
Responses
The motion of the car creates an unbalanced backward force on the balloon.
The motion of the car creates an unbalanced backward force on the balloon.
The car moves forward, while inertia keeps the balloon in place.
The car moves forward, while inertia keeps the balloon in place.
Inertia prevents the force of the car from acting on the balloon.
Inertia prevents the force of the car from acting on the balloon.
The force of inertia on the balloon balances the force from the motion of the car.