P8 Forces in balance (triple)

Which statement is true about a moving object?
When an object is ....

• ...accelerating, the resultant force acting on it must be zero
• ... moving at a steady speed, the air resistance acting on it must equal zero
• ... moving at a steady speed, the resultant force acting on it must equal zero
• ... moving, there must be a resultant force acting on it.

Tags

NGSS.HS-PS2-1

Which statement is correct about a bottle of water?

• its mass at the North Pole is different from its mass at the Equator
• its mass is measured in newtons
• its weight and mass are the same thing
• its weight is one of the forces acting on it

Which statement about mass and weight is correct?

• Mass and weight are both forces
• Neither mass nor weight is a force
• Only mass is a force
• Only weight is a force

Tags

NGSS.MS-PS2-4

Wind blowing at 20 mph.Vector or scalar?

• Scalar
• Vector

30 m/sec, East. Scalar or Vector

• Scalar
• Vector
• Neither

Sara walks from Point A to Point B. Which is true?

• Distance and displacement are EQUAL
• Distance is less than displacement

"For every action, there is an equal and opposite reaction."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• Newton's 4th Law

Tags

NGSS.MS-PS2-1

Two ice skaters moving in a straight line at a constant speed.

• Balanced Force

• Unbalanced Force

A car accelerating around a mountain curve.

• Balanced Force

• Unbalanced Force

Tags

NGSS.MS-PS2-2

A book sitting on a shelf.

• Balanced Force

• Unbalanced Force

Tags

NGSS.3-PS2-1