Physical Science Spring Semester Exam Study Guide

Equal and opposing forces acting on an object that result in no movement exemplify:

• unbalanced forces

• balanced forces

• acceleration

• displacement

Which of the following scenarios demonstrates the principle that a net force causes an object to change its motion?

• Newton’s 1st law

• Newton’s 2nd law

• Newton’s 3rd law

• Terminal Velocity

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In the absence of air resistance, if a light feather and a heavy rock are dropped simultaneously, an observer should see:

• The rock falls slower than the feather.

• The rock falls faster than the feather.

• The rock and feather fall at the same rate.

• The rock and feather remain suspended and do not fall.

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A car maintains a constant speed of 45 mi/hr as it navigates a circular track. This indicates a constant:

• speed

• velocity

• direction

• acceleration

What term describes the energy an object possesses due to its motion?

• kinetic energy

• mechanical energy

• gravitational potential energy

• thermal energy

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The reading on a car's speedometer at any given moment represents its:

• instantaneous speed

• constant speed

• average speed

• velocity

If a 53 kg stone detaches from a cliff, the force with which gravity pulls it towards the Earth is approximately:

• 519.4 N

• 530 N

• 53 kg

• 53 N

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What is the term for the bending of a light wave as it encounters an obstacle?

• reflection

• refraction

• diffraction

• interference

The capacity of a system to perform work is known as:

• chemical potential

• kinetic

• thermal

• gravitational potential

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NGSS.MS-PS3-4

What is the rate at which an object's velocity changes over time?

• position

• time

• velocity

• speed