one dimensional motion

What is the displacement of an object at rest?

• 0 m
• 1 m
• 9.8 m
• 9.81 m

What is velocity?

• The total distance traveled by an object
• The distance from start to end, including the direction
• How fast an object travels
• The speed at which an object travels plus its direction

What is acceleration?

• It is the displacement.
• It is the velocity.
• It is the rate of change of the displacement.
• It is the rate of change of the velocity.

Which of the following is NOT a valid unit for acceleration?

• m/s/s
• m/s²
• km/hr/sec
• km/hr

What happens to an object's motion when the velocity is positive and the acceleration is negative?

• The object slows down.
• The object speeds up.
• The object remains at a constant velocity.
• The object remains at rest.

Which of the following units are used to measure free fall?

• m/s
• m/s²
• m*s
• m²/s²

Which of the following is a value for the acceleration of objects in free fall?

• 4.905 m/s²
• -4.905 m/s²
• 9.81 m/s²
• -9.81 m/s²

The slope on a position vs time graph represents

• displacement

• velocity

• acceleration

• cannot be determined

The slope on a velocity vs time graph represents

• displacement

• velocity

• acceleration

• cannot be determined

What is the velocity of a projectile at the top of the path?

• 0 m/s

• -9.81 m/s²

• 9.81 m/s²