Brain Pop: Friction

What is true about all forces?

• They are unbalanced

• They involve more than one object

• They cause objects to move

• They cancel each other out

Tags

NGSS.MS-PS2-1

What does the measurement unit N stand for?

• Net Force

• Newton

• Neutrino

• Net Weight

Which two components must a vector quantity have?

• Magnitude and velocity

• Acceleration and direction

• Force and speed

• Direction and magnitude

If the net force on an object is zero, what can you conclude?

• The object is not accelerating

• The object is not touching anything

• The object is not moving

• The object is slowing down

Which one of these arrows best corresponds to the force of drag?

• 
• 
• 
• 

What can you infer about an object moving at a constant velocity?

• No forces are acting on it

• Gravity is exerting the strongest force on it

• The forces acting on it are in balance

• It is stationary

Acceleration occurs when an object is subjected to a(n):

• Force

• Balanced force

• Unbalanced force

• Contact force

Tags

NGSS.MS-PS2-2

What is true of non-contact forces?

• They are always stronger than contact forces

• They always drive two objects farther apart

• They become weaker with distance

• They can not make two objects touch

Tags

NGSS.MS-PS2-5

If you drop an egg off of the Empire State Building, which of the following things will happen first?

• Drag will increase

• The egg will appear to hover

• Gravity and drag will fall into balance

• The net force will be zero

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-5

Which of the following statements is always true?

• An object at rest has no forces acting on it

• Unbalanced forces lead to a change in speed or direction

• Gravity always leads to a change in speed or direction

• The net force on a moving object can never be zero

Tags

NGSS.MS-PS2-2