Unit 3 AP Physics

Inertia is entirely based on an object's:

• Speed

• Size

• Mass

• Volume

Tags

NGSS.HS-PS2-1

What is the relationship between the force the cannon puts on the ball and the force the ball puts back on the cannon?

• The force on the ball is greater

• The force on the cannon is greater

• The forces are equal

• The forces are unequal, but it's impossible to say which way

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

Which of the following is an example of action-at-a-distance?

• Applied Forces

• The Force of Gravity

• The Normal Force

• The Force of Tension

Tags

NGSS.HS-PS2-4

Which of the following is an example of a contact force?

• The force of gravity

• Electric forces

• The force of friction

• Magnetic forces

When a kangaroo jumps, the kangaroo applies an action force on the ground. Which of the following is true regarding the action force? Select two answers.

• Is greater than the action force

• Is equal to the action force

• Cancels out the action force

• Is exerted by the ground

Tags

NGSS.HS-PS2-1

How would you find the vertical component of F₁?

• 20.0 * sin(35)

• 20.0 * cos(35)

• 20.0 * tan(35)

• 20.0 * (35)

Tags

NGSS.HS-PS2-1

How would you find the horizontal component of F₁?

• 20.0 * sin(35)

• 20.0 * cos(35)

• 20.0 * tan(35)

• 20.0 * (35)

Tags

NGSS.HS-PS2-1

A biker travels at constant velocity. All of the following are true except:

• The force of friction acts opposite the direction of his motion.

• The force of friction is equal to the forward force he applies.

• He has a net force acting on him.

• The normal force is equal to his weight.

Tags

NGSS.HS-PS2-1

A stick is used to hit a ball at an angle above the horizontal, as shown in Figure 1. Figure 2 shows the free body diagram of the ball. Figure 3 shows the free body diagram of the stick. Which of the following pairs of forces represents an action-reaction pair and the object or objects involved in the action-reaction pair?

A falling skydiver opens his parachute. A short time later, the weight of the skydiver-parachute system and the drag force exerted on the system are equal in magnitude. Which of the following statements predicts the motion of the skydiver at this time?

• The skydiver is at rest.

• The skydiver is moving downward with constant speed.

• The skydiver is moving downward with an upward acceleration.

• The skydiver is moving downward with a downward acceleration.

Tags

NGSS.HS-PS2-1