1.
In which of these situations would an object have the greatest momentum?
An object with a small mass is moving quickly.
An object with a small mass is moving slowly.
An object with a large mass is moving quickly.
An object with a large mass is moving slowly.
An object with a large mass is moving quickly.
2.
In which situation would the momentum of a moving object increase?
A new force acts on the object, opposing the object's motion.
A force acting in the direction opposite the object's motion is removed from the object.
A force acting in the direction of the object's motion is removed from the object.
Two forces of equal magnitude act on the object in opposite directions.
A force acting in the direction of the object's motion is removed from the object.
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?
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.
The motion of the car creates an unbalanced backward force on the balloon.
The car moves forward, while inertia keeps the balloon in place.
A force applied to an object at rest causes the object to move. According to Newton's first law, what must be true of the force?
The force is stronger than gravity.
The force is stronger than inertia.
The force is unbalanced.
The force comes from behind the object.
The motion of the car creates an unbalanced backward force on the balloon.
According to Newton's first law, the force must be unbalanced