Motion in One Dimension

What is the difference between distance and displacement?

• Distance is a vector quantity, whereas displacement is a scalar quantity.

• Distance is measured in meters, whereas displacement is measured in kilometers.

• Distance is a scalar quantity, whereas displacement is a vector quantity.

• Distance is a physical quantity, whereas displacement is a mathematical concept.

If an object moves 5 meters to the right and then 3 meters to the left, what is the total distance traveled?

• 8

• 6

• 10

• 7

A car travels 200 meters to the east and then 150 meters to the west. What is the displacement of the car?

• 50 meters west

• 100 meters east

• 50 meters east

• 200 meters west

Define scalar quantity in the context of motion in one dimension.

• A scalar quantity is a vector quantity in motion in one dimension.

• A scalar quantity in motion in one dimension is a physical quantity that is fully described by a single real number.

• A scalar quantity is a quantity that has both magnitude and direction in motion in one dimension.

• A scalar quantity is a quantity that changes with time in motion in one dimension.

A person walks 30 meters north and then 40 meters south. What is the total displacement of the person?

• 15 meters south

• 20 meters north

• 5 meters east

• 10 meters south

Explain the concept of speed in relation to motion in one dimension.

• Speed in one dimension is the rate at which an object covers distance in a specific direction.

• Speed in one dimension is the rate at which an object covers distance in no direction.

• Speed in one dimension is the rate at which an object covers time in a specific direction.

• Speed in one dimension is the rate at which an object covers distance in multiple directions.

Tags

NGSS.MS-PS3-1

If a train travels at a speed of 60 km/h for 2 hours, how far does it travel?

• 120 km

• 100 km

• 180 km

• 150 km

What is the formula to calculate average speed?

• Average Speed = Total Time / Total Distance

• Average Speed = Total Distance x Total Time

• Average Speed = Total Distance / Total Time

• Average Speed = Total Distance - Total Time

A ball rolls 8 meters to the east and then 6 meters to the west. What is the total displacement of the ball?

• 3 meters east

• 4 meters east

• 10 meters west

• 2 meters east

Describe the difference between speed and velocity.

• Speed is scalar, velocity is vector.

• Speed is a vector, velocity is a scalar.

• Speed and velocity are the same thing.

• Speed is a direction, velocity is a magnitude.