Misconception EGM012:

The motion energy of an object does not depend on speed (the motion energy of an object does not increase as the speed increases) (Kruger, 1990).

Items that test for misconception EGM012 in this project () and key idea ()
Item ID
Number

Item Description

How Often the Misconception was Chosen

Select This Item for My Item Bank

EG007002

The motion energy of an object depends on the speed and mass of the object.

26%

EG007003

The motion energy of an object depends on the speed and mass of the object.

22%

EG092002

The motion energy of an object depends on the speed of the object but not the direction the object is moving.

21%

RG082002

Kinetic energy is proportional to the speed squared, so when a moving object has its speed decreased by half the kinetic energy of that object decreased by one fourth.

19%

EG001007

For two balls that have the same mass, the ball that is rolling faster has more motion energy.

19%

EG001005

For two balls that have the same mass, the ball that is rolling faster has more motion energy.

16%

EG005003

Increasing the speed of an object increases its motion energy.

16%

RG174001

Kinetic energy is proportional to mass, so when a moving object has its mass increased by two the kinetic energy of that object increases by two. (Item uses bar graphs.)

15%

EG077002

When comparing two identical cars, the car that has more motion energy is moving faster than the car that has less motion energy.

15%

EG010004

For two objects that weigh the same, the object with more motion energy is moving faster.

15%

RG062003

When comparing two airplanes thrown at different speeds, the faster plane has more energy because it has a higher speed.

14%

EG001006

For two balls that have the same mass, the ball that is rolling faster has more motion energy.

14%

EG025002

In order to know which of two objects is moving faster, you need to know the weight (mass) of each object in addition to the motion energy.

12%

EG001008

For two balls that have the same mass, the ball that is rolling faster has more motion energy.

12%

RG060003

When comparing the a ball dropped down and a ball thrown down, the thrown ball has more energy because it is moving faster.

12%

EG005004

Increasing the speed of an object increases its motion energy.

11%

EG008004

A ball has motion energy only when it is moving.

10%

EG004004

A car has the most motion energy when it is traveling at the highest speed.

9%

EG080002

When comparing two bike riders with different amounts of motion energy, the only way to know which one is riding faster is to also know the weight (mass) of each.

8%

RG003003

Kinetic energy is proportional to the speed squared, so when a moving object has its speed increased by two the kinetic energy of that object increases by four.

7%

EG004005

A car has the most motion energy when it is traveling at the highest speed.

7%