Inertia is (1 point)
A. the resistance of an object to change its motion.
B. a moving object's speed and direction.
C. an object's motion.
D. a force that acts on a resting object.
5 answers
A. the resistance of an object to change its motion.
You are sitting in a stopped bus. When the bus starts moving forward, you appear to move backward relative to the bus. Which statement best explains this observation? (1 point)
A. The force of inertia on you balances the force from the motion of the bus.
B. Inertia prevents the force of the bus from acting on you.
C. The bus moves forward, while inertia keep you in place.
D. The motion of the bus creates an unbalanced backward force on you.
A. The force of inertia on you balances the force from the motion of the bus.
B. Inertia prevents the force of the bus from acting on you.
C. The bus moves forward, while inertia keep you in place.
D. The motion of the bus creates an unbalanced backward force on you.
B. Inertia prevents the force of the bus from acting on you.
Which statement best explains why a paper airplane eventually falls to the ground? (1 point)
A. Inertia acts as a balanced force that slows the airplane and pulls it down.
B. The force from throwing the airplane loses strength as the airplane moves.
C. The unbalanced forces of air resistance and gravity slow the airplane and pull it down.
D. Inertia creates the new forces acting on the airplane to keep it up.
A. Inertia acts as a balanced force that slows the airplane and pulls it down.
B. The force from throwing the airplane loses strength as the airplane moves.
C. The unbalanced forces of air resistance and gravity slow the airplane and pull it down.
D. Inertia creates the new forces acting on the airplane to keep it up.
C. The unbalanced forces of air resistance and gravity slow the airplane and pull it down.