Physics Unit 2: Forces Review

Draw a free body diagram of the following situation: A box is pushed towards the right with a force of 25 N. The box begins to accelerate towards the right. Include friction, normal, and gravity.

Draw a free body diagram of the following situation: A box slides across a frictionless surface at a constant speed in a straight line.

Draw a free body diagram of the following situation: A 50-kg skydiver opens a parachute and quickly accelerates upward. Air resistance provides 800 N of force upward. Include the number of N for weight.

A 196-N block of cement is pulled upward (not sideways!) with a force of 400 N. What is the acceleration of the block?

A person is attracted towards the center of Earth by a 440-N gravitational force. The force with which Earth is attracted toward the person is

• 440 N.

• very very small.

• very very large.

How much force is needed to accelerate a 4.0-kg physics book to an acceleration of 2.0 m/s²?

A 100 kg skydiver reaches terminal velocity, traveling at 75 m/s. What is the net force acting on the skydiver? What is her acceleration?

• Net Force = O N

  Acceleration = 0 m/s²

• Net Force = O N

  Acceleration = 9.8 m/s²

• Net Force = 100 N

  Acceleration = 10 m/s²

• Net Force = 750 N

  Acceleration = 75 m/s²

If a woman weighed 500 N on Earth, what would she weigh on Jupiter, where the acceleration of gravity is 26 m/s²?

An object is sitting on a table at rest. Which type of mechanical equilibrium describes the object?

From greatest to least, rank them by how much they resist being set into motion.

(type the letters without spaces)