Imagine that you throw a ball directly upward. Which of the following best describes how Newton's 2nd law accounts for the motion of the ball when it reaches its maximum height?

What will be an ideal response?


The ball feels a net force that is down and its acceleration is also down.

Physics & Space Science

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In addition to their usefulness in understanding physics, electromagnetic fields have an significant philosophical implication. What is this implication?

A) They support the materialism of Newtonian physics. B) The laws of electromagnetic fields imply that atoms are not real. C) The laws of electromagnetic fields imply that atoms are real. D) They represent a departure from the materialism of Newtonian physics. E) They change our basic notions of what "time" and "space" mean.

Physics & Space Science

A car runs into a brick wall. The collision pushes in the car’s front end about a meter. Is the work done on the car by the contact interaction between it and the wall positive, negative, or zero?

A. Positive B. Negative C. Zero D. One needs more information to answer.

Physics & Space Science

The peaks of the sound wave are referred to as _____, while the valleys are referred to as _____.

Physics & Space Science

Magnetic Poles: A straight bar magnet is initially 4 cm long, with the north pole on the right and the south pole on the left. If you cut the magnet in half, the right half will

A. contain only a north pole. B. contain a north pole on the right and a south pole on the left. C. contain only a south pole. D. no longer contain any poles.

Physics & Space Science