𝙆𝙞𝙣𝙚𝙢𝙖𝙩𝙞𝙘𝙨

The rate of change of an object's velocity is called _______.

• speed

• force

• acceleration

• energy

Which of the following statements is true of the above graph?

• An object is moving at a variable speed away from the student.

• An object is standing still immediately next to the student.

• An object is moving at a constant speed of 6 m/s away from the student.

• An object is standing still at a position of 6 meters from the student.

Abby is waiting for the school bus. She sees it driving down the street straight toward her position. If the bus is moving at a constant speed, which graph shows the position of the bus relative to Abby through time?

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Which of the following statements about the motion of the tortoise is true?

• The tortoise's speed is decreasing through time.

• The tortoise is moving at a constant speed.

• The tortoise's speed is increasing through time.

• The tortoise's position is not changing through time.

Tags

NGSS.MS-PS3-1

Directions: Select ALL the correct answers.

Which of the following are examples of acceleration?

• A car speeds up.

• A car slows down.

• A car travels in a straight line at a constant speed.

• A car travels at a constant speed and turns left.

Tyler kicks a soccer ball toward the opposite side of the field. If the ball moves at a constant speed, which graph shows the position of the ball relative to Tyler through time?

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Tags

NGSS.MS-PS3-1

Which of the following statements about the rabbit's motion is true?

• The rabbit's speed is increasing through time.

• The rabbit's speed is decreasing through time.

• The rabbit is moving at a constant speed.

• The rabbit's position is not changing through time.

Which of the following best describes the difference between speed and acceleration?

• Speed is the distance an object travels within a specific unit of time, whereas acceleration is the rate at which the speed or direction of an object is changing.

• Speed is the distance an object travels within a specific unit of time, whereas acceleration is a measure of the force necessary to change the speed of an object.

• Acceleration is the distance an object travels within a specific unit of time, whereas speed is a measure of the force necessary to change the acceleration of an object.

• Acceleration is the distance an object travels within a specific unit of time, whereas speed is the rate at which the acceleration or direction of an object is changing.

The position vs. time graph below can be used to describe Jim's motion as he rides his motorcycle. Which of the following is true?

• Jim and his motorcycle are standing still.

• Jim and his motorcycle are slowing down.

• Jim is riding the motorcycle in a straight line.

• Jim is riding his motorcycle at a speed of five meters per second.

The image below shows a graph of velocity versus time for the fall of a steel ball. What does the slope of this graph represent?

• the deceleration of a steel ball

• the position of a steel ball

• the speed of a steel ball

• the positive acceleration of a steel ball

Tags

NGSS.MS-PS3-1