Which is an indication that a chemical change to a substance has occurred?

A.

It changes shape.

B.

New substances are formed.

C.

Energy is used or given off.

D.

both B and C

If a car has a kinetic energy of 400 J at 20m/s what. is the cars kinetic energy in kJ at a speed of 5 m/s

Examples of shape in the classroom

The quantity that measures how much a machine multiplies force is called?

A red light wave has a wavelength of 30,000 meters and a period of 0.0001 seconds. What is the speed of this light wave?

How is thermal energy from the Sun distributed on Earth?

In automatic response to a stimulus is called a reflex

Who invented evolution?

A puppy weighing 3 kilograms races through the dog park. if she slows from a speed of 2 meters/second to 1 meter/second, what will happen to her kinetic energy? use the kinetic energy equation. a. her kinetic energy decreases to 1.5 j b.

Which type of material would be best to use for construction in an area prone to earthquakes? concrete brick wood stone

If a car is moving along the highway at a constant speed of 50 m/s, is there an unbalanced force acting on the car? How do you know? Explain using one of Newton's Laws.