Physics Final Exam

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Rockets are launched into space using jet propulsion where exhaust accelerates out from the rocket and the rocket accelerates in an opposite direction.

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Tags

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Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

Tags

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This law is often called "the law of inertia."

• Newton's 1st Law
• Newton's 2nd Law
• Newton's 3rd Law
• None of them

What is the force that causes objects to fall to Earth?

• Air resistance
• Gravity
• Water resistance
• Pressure

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What will cause an object to move?

• Applied forces
• Balanced forces
• Unbalanced forces

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If an object is stationary (not moving) the forces acting upon it are _____________

• unbalanced
• weak
• balanced
• Hulk Smash!

What is the net force?

• 20 N 
• 0 N 
• 400 N 
• 40 N 

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The sum of all forces acting on an object.

• Contact Force
• Balanced Force
• Unbalanced Force
• Net Force

Tags

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Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.

• eventually stop since all objects ultimately "lose their steam"

• eventually stop as its inertia slowly becomes used up

• continue in motion with the same speed and direction

• either a, b, or c -- depending on whether the astronaut continues to push it

Tags

NGSS.HS-PS2-1

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