Physics & Chemistry, Ch.1, Physical i Science

What is motion?

• Motion is the process of changing time.

• Motion is the process of changing speed.

• Motion is the process of changing position.

What is a reference point?

• A reference point is the starting point of your choice to describe the location (position) of an object. The reference point is like a hint of where to start looking for something that your're looking for.

• A reference point is the ending point of your choice to describe the location (position) of an object. The reference point is like a hint of where to end looking for something that your're looking for.

• A reference point is the difference between the initial position and the final position of an object.

What is the difference between distance and displacement?

• Displacement is how far and how much of the measurement of the length to get to somewhere. Distance is the difference between the initial position and the final position of an object. Distance is also the shortest distance from the initial position and the final position.

• Distance is how far and how much of the measurement of the length to get to somewhere. Displacement is the difference between the initial position and the final position of an object. Displacement is also the shortest distance from the initial position and the final position.

What is velocity?

• Velocity is a measure of the distance an object travels for each unit of time.

• Velocity is the speed and the direction of a moving object.

• Velocity is the process of changing position.

• Velocity is the direction you should go to find the object your'e looking for.

What are the ways of changing speed? Choose the best answer.

• The ways of changing speed are biking, surfing, and jumping.

• The ways of changing speed are swimming, flying, and running.

• The ways of changing speed are "Slowing Down," "Stopping," "Speeding Up," and "Average Speed."

• The ways of changing speed are doing push-ups and jumping jacks.

What is average speed?

• Average speed is the total distance traveled divided by the total time taken to travel that distance.

• Average speed is the rate of change of position in which the same distance is traveled each second.

• Average speed is speed at a specific instant in time.

What is the correct formula for speed?

• a2 + b2 = c2

  (a squared times b squared equals c squared)

• πr2

  (π times radius squared)

• d/t

  (distance divided by time)

• y = mx + b

What is acceleration?

• Acceleration is the same thing as velocity.

• Acceleration is the same thing as speed.

• Acceleration is a measure of the change in distance during a period of time.

• Acceleration is a measure of the change in velocity during a period of time.

What is the formula to find acceleration?

• (final velocity - initial velocity)

  ---

  (final time - initial time)

• d/t

  distance divided by time

• b x h x 1/2

  base times height times 1/2

What is the best example that shows acceleration

• a pig sleeping in it's pen

• mittens on a person's hands

• a piece of paper on the table

• the planets orbiting the sun