Dynamics AP Physics

As the angle of the incline increases, what happens to the normal force?

• The normal force increases

• The normal force decreases

• The normal force is not affected by the incline

• The normal force is only dependent on the force due to gravity

Tags

NGSS.HS-PS2-1

The Earth pulls downward on a pingpong ball with a force  of 1N. If this is the "action" force, what is the "reaction" force?

• The ground exerts a force of 1N on the ping pong ball
• The ping pong ball exerts a force of 1 N on the Earth
• The ping pong ball pushes down on the earth with a force of 1N
• The is no reaction force when a gravitational force is involved

Tags

NGSS.HS-PS2-4

Given the FBD, which of the following must be true?

• The frictional force must be accelerating the system to the left.

• The box must be accelerating to the right.

• The box must be moving to the right.

• The FBD is incorrectly drawn. This situation isn't possible

Tags

NGSS.HS-PS2-1

Which of the following is true about the system shown?

• The system is not accelerating.
• The tension between m₂ and m₁ is less than the tension between m₂ and m₃
• The acceleration of the system only depends on m₃
• None of the other answers are true

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Which of the following statements is true about the image above?

• The accelerations of the blocks will vary according to their mass

• The net force acting on each block is the same

• The blocks will experience the same acceleration

• The 3m box will eat the 2m and the m boxes

Tags

NGSS.HS-PS2-1

Sam is hover boarding down they hall at a constant velocity. Assuming there is friction, which of the following must be true?

• The force applied by the board must be greater than the frictional force

• The frictional force must equal the force applied by the board

• The force applied must equal zero

• There is not enough information

Tags

NGSS.HS-PS2-1

If there is no friction, then the acceleration would be equal to

• mg

• sin(θ)mg

• g

• sin(θ)g

Tags

NGSS.HS-PS2-1

If μ_k = 0.65 and μ_s = 0.7, acceleration would be equal to

• 0 m/s/s

• 9.8 m/s/s

• 3.35 m/s/s

• -2.63 m/s/s

Tags

NGSS.HS-PS2-1

A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?

• 1,520 N
• 0 N
• 4.21 N
• Not enough information to answer

Tags

NGSS.HS-PS2-1

Assuming both objects are at rest, which object is more massive? M1 or M2?

• M1 is more massive
• M2 is more massive
• both M1 and M2 are the same mass

Tags

NGSS.HS-PS2-1