A student is riding the school bus. The bus stops as the driver applies the brakes. Which of these statements best describes this situation?(1 point) Responses The school bus does not lose or gain kinetic energy. The school bus does not lose or gain kinetic energy. The bus is gaining energy because of friction. The bus is gaining energy because of friction. A force is changing the motion of the bus. A force is changing the motion of the bus. There is no force acting on the bus so it stops moving.
A pitcher throws a baseball to the catcher. The ball's path begins as a straight line, and then its patch curves toward the ground. Which two forces are acting on the baseball?(1 point) Responses electricity and friction electricity and friction gravity and friction gravity and friction inertia and magnetism inertia and magnetism nuclear and inertia
gravity and friction
Two people are in a rowboat on a river. The current of the river water carries them at a speed of five meters per second even when they are not rowing. What will happen to the boat's motion of no other forces act on the boat?(1 point) Responses The boat's speed will increase. The boat's speed will increase. The boat's speed will decrease. The boat's speed will decrease. The boat's speed will stay the same. The boat's speed will stay the same. The boat will change direction.
The boat's speed will stay the same.
Inertia is(1 point) Responses an object's motion. an object's motion. a moving object's speed and direction. a moving object's speed and direction. a force that acts on a resting object. a force that acts on a resting object. the resistance of an object to change its motion.
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) Responses The bus moves forward, while inertia keep you in place. The bus moves forward, while inertia keep you in place. The force of inertia on you balances the force from the motion of the bus. The force of inertia on you balances the force from the motion of the bus. Inertia prevents the force of the bus from acting on you. Inertia prevents the force of the bus from acting on you. The motion of the bus creates an unbalanced backward force on you.
The bus moves forward, while inertia keep you in place.
Which statement best explains why a paper airplane eventually falls to the ground?(1 point) Responses Inertia creates the new forces acting on the airplane to keep it up. Inertia creates the new forces acting on the airplane to keep it up. The force from throwing the airplane loses strength as the airplane moves. The force from throwing the airplane loses strength as the airplane moves. The unbalanced forces of air resistance and gravity slow the airplane and pull it down. The unbalanced forces of air resistance and gravity slow the airplane and pull it down. Inertia acts as a balanced force that slows the airplane and pulls it dow
