If the force acting on the objects is constant Wich statement about interim and acceleration is supported by the data
A. An object with less mass has less intertia which causes it to speed up less quickly.
B. an object with less mass has more intertia which causes it to speed up more quickly
C. an object with higher mass has less intertia which causes it to speed up more quickly
D. an object with higher mass has more intertia which causes it to speed up less quickly
D. An object with higher mass has more inertia which causes it to speed up less quickly.
if we put a glass with an index card on top and then a metal disk on top of the index card.
why does the disc fall straight down into the glass when we quickly pull the index card away.
A. equilibrium
B. intertia
c. kinetic friction
D. static friction
B. inertia
a student is riding the school bus. The bus stops as the driver applies the brakes. Which of the statements best describe this situation.
A. the buss is graining energy because of friction
B. a force is changing the motion of the bus.
C. the school bus does not loose or gain kinetic energy
D, There is no force acting on the bus so it stops moving
B. A force is changing the motion of the bus.
A pitcher throws a baseball to the cather. the balls path begins as a straight line, and then its patch curves towards the ground. Which two forces are acting on the baseball?
A. electricity and friction
B. gravity and friction
C. intertia and magnetism
D. nuclear and intertia
B. Gravity and friction.
Interia is....
A the resistance of an object to change its motion
B a moving objects speed and direction
C an object's motion
D a force that acts on a resting object
A. The resistance of an object to change its motion.
you are sitting in a stopped bus. when the bus starts moving forwards, you appear to move backwards relative to the bus, which statement best explains this observation.
The bus moves forwards, while intertia keep you in place.
the motion of the bus creates an unbalanced backward force on you.
the force of inertia on you balances the force from the motion of the bus.
intertia prevents the force of the buss from acting on you
The force of inertia on you balances the force from the motion of the bus.
which statement best explains why a paper airplane eventually falls to the ground.
A. intertia acts as a balance force that slows the airplane and pulls it down.
B. the force from throwing the airplane loses strength as the airplane moves
C. inertia creates the new forces acting on the airplane to keep it up.
D. the unbalanced forces of air resistance and gravity slow the airplane and pull it down
D. The unbalanced forces of air resistance and gravity slow the airplane and pull it down.
Peggy knows that height can change how fast a car will go. Which experiment will help Peggy choose the starting position that allows every car to complete the loop?
A. an experiment where Peggy drops each car from different starting heights multiple times and records which heights allow all three cars to complete the loop every time
B. an experiment where Peggy drops each car from the same starting height and records which cars complete the loop from that height
A. An experiment where Peggy drops each car from different starting heights multiple times and records which heights allow all three cars to complete the loop every time.
The diagram models a device that was the foundation for the modern electrical turbine.
Which of the following is causing the wheel to turn?
A.Force from the mechanical energy generated by the solar radiation causes the wheel to turn.
B.Force from the mechanical energy generated by the moving water causes the wheel to turn.
C.Force from the thermal energy generated by the solar radiation causes the wheel to turn.
D. Force from the thermal energy generated by the moving water causes the wheel to turn.
B. Force from the mechanical energy generated by the moving water causes the wheel to turn.
Which of the following is most likely true?
A.Small objects produce more light than larger objects.
B.Large objects produce less heat than smaller objects.
C.Objects that produce light energy often produce heat energy.
D. Objects that do not produce light energy have high temperatures.
C. Objects that produce light energy often produce heat energy.
A piece of metal is heated and then submerged in cool water. Which statement below best describes what happens?
A.The temperature of the water will decrease, while the temperature of the metal will increase.
B.The temperature of the water will decrease and the temperature of the metal will also decrease.
C.The temperature of the water will increase, while the temperature of the metal will decrease.
D.The temperature of the water will increase and the temperature of the metal will also increase.
C. The temperature of the water will increase, while the temperature of the metal will decrease.
In an engine, fuel and oxygen chemically react and release energy. What happens to the energy NOT USED BY THE ENGINE.
A. It has been destroyed.
B. It is lost in the form of heat and sound.
C. It remains stored in the chemical bonds of the fuel.
D. It is converted into methane.