forces and their effects

What is a force?

• it is anything which is capable of changing the state of

  motion or rest of a body, or deforming it.

• It is anything that occupies a space and has mass and volume.

• It is a device that is used to measure forces and to weigh bodies.

• is a change of position of a body over time with respect to a reference system which is considered fixed.

Tags

NGSS.HS-PS2-1

The unit of force is the Newton

• N

• n

• Nn

Elastic materials are

• those that deform when a force is applied.

• those that deform but return back to their original shape

• those that can be applied forces but go back to the beginning

• None is correct.

Friction is the force between two touching things.

• True.

• False.

What is the force that causes objects to fall to Earth?

• Air resistance
• Gravity
• Water resistance
• Pressure

Tags

NGSS.5-PS2-1

Which of these is NOT a force?

• Friction
• Air resistance
• Water resistance
• Electrical resistance

In which direction does gravity act?

• Downwards
• Upwards
• In all directions
• Towards the centre of the Earth

Tags

NGSS.5-PS2-1

What type of force is air resistance?

• Contact
• Non-contact

When two objects rub together, what force do they produce

• Gravity
• Air resistance
• Friction
• Water resistance

Is this an example of a balanced or unbalanced force?

• Balanced force

• Unbalanced force

• I don't know