Speed, Acceleration and Velocity

What is the effect of gravity on motion?

• Gravity causes objects to float away from the Earth.

• Gravity causes objects to accelerate towards the Earth at approximately 9.8 m/s².

• Gravity has no effect on the motion of objects.

• Gravity causes objects to move in a straight line at constant speed.

What is the unit of speed?

• Miles per hour (mph)

• Meters per second (m/s)

• Feet per second (ft/s)

• Kilometers per hour (km/h)

What is instantaneous speed?

• The speed of an object at a specific moment in time.

• The average speed of an object over a period of time.

• The maximum speed an object can achieve.

• The speed of an object in a straight line.

What is average speed?

• Total distance traveled divided by the total time taken.

• Total distance traveled multiplied by the total time taken.

• Total time taken divided by the total distance traveled.

• Total distance traveled plus the total time taken.

What is velocity?

• The speed of an object in a particular direction.

• The distance traveled by an object in a given time.

• The rate of change of an object's position.

• The total path length traveled by an object.

What is the significance of a negative acceleration?

• It indicates that an object is speeding up.

• It indicates that an object is slowing down.

• It has no effect on the object's motion.

• It indicates a change in direction.

What is the formula for calculating speed?

• Speed = distance + time

• Speed = distance - time

• Speed = distance / time

• Speed = distance * time

How is velocity calculated?

• Velocity = Speed + direction.

• Velocity = Speed - direction.

• Velocity = Speed x direction.

• Velocity = Speed / direction.

What does constant speed mean?

• An object is moving at the same speed over time.

• An object is accelerating continuously.

• An object is moving at varying speeds.

• An object is at rest.

What is acceleration?

• The rate of change of velocity of an object.

• The speed of an object in a straight line.

• The force applied to an object.

• The distance traveled by an object over time.