Science

• Speed is a scalar quantity
• Velocity is a vector quantity
• Speeding is accelerating
• Slowing is decreasing
• Speed and velocity describe how fast an object is moving
• Speed has magnitude but no direction
• Velocity has magnitude and direction
• Motion is a change in position with reference to a fixed point
• Force is a push and pull with the force of gravity towards an object
• Mass is the amount of matter
• Meter is the unit of length or distance
• Velocity is related to displacement
• Speed is related to distance
• Distance is the total path length traveled
• Displacement is the change in position from the initial to the final point
• Acceleration is the rate at which an object changes
• Motion can be detected by any physical means
• Odometer measures the displacement of a vehicle
• Speedometer measures the instantaneous speed of a vehicle at any given moment
• GPS stands for Global Positioning System and uses satellites
• Police use laser guns to detect over speeding
• Animals that can echolocate use reflected sound waves to determine the distance of objects around them
• Odometer measures the total distance traveled by a vehicle
• Motion detectors are not 100% accurate
• Point of reference: motion of an object can be described using its different points of reference
• Distance: describes the total space covered by a moving object
• Displacement: the shortest distance covered by an object from its starting point to its final point
• Time lapse refers to how long an object is moving
• Speed is equal to distance divided by time
• Velocity is the rate of change in the position of a moving object with respect to the frame of reference
• Acceleration is the rate of change in velocity over a certain period of time
• Displacement is equal to zero
• Displacement and distance are equal if the path is a straight line
• Acceleration is the change in velocity per unit of time
• Displacement is the change in position of an object from the starting point to the final point
• Instantaneous speed is the speed at a particular instance of time
• Instantaneous velocity is the velocity at a particular instance of time
• A laser speed gun is a device used to measure the instantaneous speed of a moving automobile
• An odometer is a device used to measure the distance traveled by a vehicle
• A speedometer is a device used to measure speed at any particular time