Physical Science: Forces and Newton's Law- PHS.5

Illustrate your answer: Draw a diagram representing a satellite orbiting Earth. Add three arrows to the diagram to indicate the effects of

A. Inertia

B. Gravity

C. The path you would predict results from the effects of inertia and gravity.

LABEL the arrows: A. Inertia B. Gravity C. Path.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Evaluate: “If gravity causes everything to fall with the same acceleration,” a friend asks, “then
 why does a crumpled piece of paper fall faster than an uncrumpled one?” How would you
 answer?

Compare and contrast:

1. static friction

2. sliding friction

3. rolling friction.

Explain: Newton’s first law of motion states that an object moves at a constant velocity unless an unbalanced force acts on it. This means that a moving object will continue to move in a straight line at a constant speed unless an unbalanced force acts on it. If an object is at rest, its velocity is zero and it stays at rest unless an unbalanced force acts on it. You might have seen the law of inertia without even knowing it. (Think about the examples that we discussed in class.) Give a discriptive explanation of an example we discussed. You may upload images to assist in explaining your answer.

Illustrate your answer: Draw a diagram indicating the path of a ball:

1. The ball is placed on the edge of a table and allowed to fall to the floor.

2. The ball is rolled rapidly across the table and falls onto the floor.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Show your work: If a 2-kg ball is thrown through the air at 20 m/s, what is the momentum of the ball?

Tags

NGSS.MS-PS3-1

Think: How is something "weightless?" Give your response.

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Essential Terminology: When an object moves in a circle, ________acts to accelerate the object toward the center of that circle.

• terminal velocity

• centripetal force

• air resistance

• momentum

Essential Terminology: The force exerted by air on a moving object is called ____________.

• Air resistance

• Momentum

• Static Friction

• Gravity

Essential Terminology: ________is the force that every object in the universe exerts on every other object.

• Air resistance

• Gravity

• Inertia

• Friction

Tags

NGSS.HS-PS2-4