Physics Questions

The force that one surface exerts on another when the two rub against each other is called

• friction.

• inertia.

• acceleration

• gravity

The law of universal gravitation states that any two objects in the uni-verse that have mass, without exception,

• attract each other.

• repel each other.

• combine to provide a balanced force.

• create friction

Tags

NGSS.MS-PS2-4

Forces can be added together only if they are

• acting on the same object

• unaffected by gravity

• balanced forces

• substantial

Tags

NGSS.MS-PS2-2

According to the law of conservation of momentum, when two objects collide in the absence of outside forces,

• velocity decreases

• velocity increases

• the objects have the same momentum before and after they collide.

• the objects have more momentum after they collide than they did before.

Which law states that the total energy in a closed system remains constant?

• Law of Conservation of Momentum

• Law of Conservation of Energy

• Newton's First Law of Motion

• Hooke's Law

What happens to the gravitational potential energy of an object as it falls towards the Earth?

• It increases

• It decreases

• It remains constant

• It first increases, then decreases

Tags

NGSS.MS-PS3-2

The energy that is stored in an object or system.

• Convert

• Potential Energy

• Kinetic Energy

• Attract

Tags

NGSS.MS-PS3-2

What is the unit of electrical resistance?

• Volt

• Ampere

• Ohm

• Watt

What type of energy transformation occurs in a battery-powered flashlight?

• Chemical to Electrical to Light

• Electrical to Chemical to Light

• Light to Chemical to Electrical

• Chemical to Light to Electrical

Any force that causes an object to move in a circle is called a(n)

• balanced force

• gravitational force.

• unbalanced force

• centripetal force