Motion and Energy Concepts Assessment

Miss Hames guides students through a physics study guide, covering topics such as forces, simple machines, potential and kinetic energy, Newton's laws, and speed calculations. She explains how to interpret motion graphs and provides tips for measuring speed. The video aims to prepare students for their physics test by reviewing key concepts and offering study strategies.

What is the primary characteristic of balanced forces?

• They cause objects to accelerate.

• They are unequal on all sides.

• They do not change an object's motion.

• They always act in the same direction.

How does an inclined plane make work easier?

• By increasing the force needed.

• By reducing the distance required.

• By spreading the effort over a distance.

• By changing the direction of the force.

Which of the following is an example of potential energy?

• A stretched rubber band

• A moving car

• A flying bird

• A rolling ball

What happens to a roller coaster's energy as it descends a hill?

• Kinetic energy decreases.

• Potential energy transforms into kinetic energy.

• Potential energy increases.

• Kinetic energy transforms into potential energy.

According to Newton's first law, what will happen to an object at rest?

• It will start moving on its own.

• It will remain at rest unless acted upon by an external force.

• It will change direction.

• It will accelerate.

How is speed calculated?

• Mass divided by force

• Force divided by mass

• Distance divided by time

• Time divided by distance

What does a horizontal line on a speed graph indicate?

• The object is accelerating.

• The object is decelerating.

• The object is not moving.

• The object is moving at a constant speed.

What does a steep slope on a speed graph represent?

• Slow motion

• No motion

• Constant motion

• Fast motion

Which equipment is necessary to measure a runner's speed?

• A scale and a timer

• A ruler and a protractor

• A thermometer and a clock

• A metric tape measure and a stopwatch

What does a straight line going up on a motion graph indicate?

• The object is accelerating.

• The object is not moving.

• The object is moving at a constant speed.

• The object is slowing down.