Motion Speed Velocity and Momentum

When two objects collide, the momentum of the pair after the collision is explained by _____.

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Law of Conservation of Momentum

Tags

NGSS.HS-PS2-2

According to Newton's Second Law of Motion, _____.

• F = mv

• F = pv

• F = ma

• F = pa

An object accelerates if it speeds up, slows down, or changes directions.

• True

• False

Tags

NGSS.MS-PS2-2

If Kim won a 300 meter race in 40 seconds, her average speed was _____.

• 15 m/s

• 25 m/s

• 7.5 m/s

• 8.5 m/s

Tags

NGSS.MS-PS3-1

What is the difference between speed and velocity?

• Speed is a scalar quantity, while velocity is a vector quantity.

• Speed is a vector quantity, while velocity is a scalar quantity.

• There is no difference; they are the same.

• Speed can only be calculated for objects in motion, while velocity can be calculated for objects at rest.

What is the definition of velocity?

• A force that opposes motion

• Uniform circular motion

• The speed of an object in a particular direction

Tags

NGSS.MS-PS3-1

the speed of an object and the direction of its motion ​ (a)  

• velocity

• acceleration

• average speed

• instantaneous speed ​

Tags

NGSS.MS-PS3-1

Which of these graphs show an object speeding up?

Tags

6.8D

Fill in the blank: The ___ of the car is 75 mph.

(a)  

• speed

• velocity

Tags

NGSS.MS-PS3-1

equals the distance traveled divided by the time it takes to travel the distance​ (a)   ​ ​

• Average Speed

• acceleration

• instantaneous speed

• velocity

Tags

NGSS.MS-PS3-1