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Physics - Ms. Kohler

Physics - Ms. Kohler. Warm up: What is a force? What are the units of force?. Date: 1/9/2019 Unit  2: Dynamics Learning Goal:  Analyze relationships between forces and motion. No , you DO NOT have a reflection today. Physics - Ms. Kohler. Drag.

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Physics - Ms. Kohler

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  1. Physics - Ms. Kohler Warm up: What is a force? What are the units of force? Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion. No, you DO NOT have a reflection today.

  2. Physics - Ms. Kohler Drag • The force of a fluid (like air or water) on a moving object is called drag. • Like kinetic friction, drag points opposite the direction of motion. • You can neglect air resistance in all problems unless a problem explicitly asks you to include it. Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion.

  3. Physics - Ms. Kohler Thrust • Thrust is a force that occurs when a jet or rocket engine expels gas molecules at high speed. • Thrust is a force opposite the direction in which the exhaust gas is expelled. Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion.

  4. Physics - Ms. Kohler Practice Question • A ball rolls down an incline and off a horizontal ramp. Ignoring air resistance, what force or forces act on the ball as it moves through the air just after leaving the horizontal ramp? • The weight of the ball acting vertically down. • A horizontal force that maintains the motion. • A force whose direction changes as the direction of motion changes. • The weight of the ball and a horizontal force. • The weight of the ball and a force in the direction of motion. Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion.

  5. Physics - Ms. Kohler Practice Question • A steel beam hangs from a cable as a crane lifts the beam. What forces act on the beam? • Gravity • Gravity and tension in the cable • Gravity and a force of motion • Gravity and tension and a force of motion Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion.

  6. Physics - Ms. Kohler Practice Question • A bobsledder pushes her sled across horizontal snow to get it going, then jumps in. After she jumps in, the sled gradually slows to a halt. What forces act on the sled just after she’s jumped in? • Gravity and kinetic friction • Gravity and a normal force • Gravity and the force of the push • Gravity, a normal force, and kinetic friction • Gravity, a normal force, kinetic friction, and the force of the push Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion.

  7. Physics - Ms. Kohler Newton's Laws Textbook Assignment: Page 120-121 Problems 1-12 Date: 1/9/2019Unit 2: Dynamics Learning Goal:  Analyze relationships between forces and motion.

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