Tony built a ramp to determine the average distance his toy car will travel when released down the ramp. Which experiment will best test how far his toy car will travel when released down the ramp?
Responses
an experiment that measures the distances that his toy car travels in many repeated trials
an experiment that measures the distances that his toy car travels in many repeated trials
an experiment that measures the distances that different toy cars travel in many repeated trials
an experiment that measures the distances that different toy cars travel in many repeated trials
an experiment that measures the distances that his toy car travels in two trials
an experiment that measures the distances that his toy car travels in two trials
an experiment that measures the distances that different toy cars travel in two trials
5 answers
The experiment that will best test how far Tony's toy car will travel when released down the ramp is: an experiment that measures the distances that his toy car travels in many repeated trials.
Which of the following is true as the cars of a rollercoaster race down a hill?
Responses
The kinetic energy of the cars is equal to the potential energy of the cars.
The kinetic energy of the cars is equal to the potential energy of the cars.
Some potential energy is transformed to kinetic energy and other forms of energy.
Some potential energy is transformed to kinetic energy and other forms of energy.
Kinetic energy is stored in the cars as they move downhill.
Kinetic energy is stored in the cars as they move downhill.
Some energy is destroyed as the cars slow down.
Some energy is destroyed as the cars slow down.
Responses
The kinetic energy of the cars is equal to the potential energy of the cars.
The kinetic energy of the cars is equal to the potential energy of the cars.
Some potential energy is transformed to kinetic energy and other forms of energy.
Some potential energy is transformed to kinetic energy and other forms of energy.
Kinetic energy is stored in the cars as they move downhill.
Kinetic energy is stored in the cars as they move downhill.
Some energy is destroyed as the cars slow down.
Some energy is destroyed as the cars slow down.
The correct answer is: Some potential energy is transformed to kinetic energy and other forms of energy.
A student with a body temperature of 37°C holds a can of cold soda with a temperature of 18°C. The student is in a room with an air temperature of 22°C. Which statement best describes the flow of heat throughout the entire system?
Responses
Heat will flow from the student to the can.
Heat will flow from the student to the can.
Heat will flow from the air to the can and the student.
Heat will flow from the air to the can and the student.
Heat will flow from the student to the can and the air to the can.
Heat will flow from the student to the can and the air to the can.
Heat will flow from the student to the can and the air, and from the air to the can.
Responses
Heat will flow from the student to the can.
Heat will flow from the student to the can.
Heat will flow from the air to the can and the student.
Heat will flow from the air to the can and the student.
Heat will flow from the student to the can and the air to the can.
Heat will flow from the student to the can and the air to the can.
Heat will flow from the student to the can and the air, and from the air to the can.
The correct answer is: Heat will flow from the student to the can and the air to the can.
2 answers