Motion the Starting Point Used to Describe the Motion or Position of an Object

What is the starting point used to describe the motion or position of an object?

• Vertex

• Reference point

• Equilibrium point

• Inflection point

What is motion?

• the process of changing position

• the distance between the starting point and the final postion

• the distance an object moves divided by the time it took to move that distance

• the measure of the change in velocity during a period of time

Tags

NGSS.MS-PS2-2

Tom throws a baseball, which travels 20 meters in 0.5 seconds. Calculate the speed of the baseball.

• 40 m/s

• 10 m/s

• 20 m/s

• 4,000 m/s

Tags

NGSS.MS-PS3-1

What is the difference between speed and velocity?

• Speed is always constant

• Speed includes direction, velocity does not

• Velocity includes direction, speed does not

• Velocity doesn't change if speed changes

Roger travels 20 meters North, 35 meters East, then 20 meters south. What is his displacement?

• 20 meters

• 35 meters

• 75 meters

• 55 meters

When is velocity constant?

• When an object's speed and direction do not change

• When an object's speed changes but direction stays the same

• When an object's speed does not change

• When an object's direction acceleration is negative

The skateboarding and walking velocities are both constant.

• TRUE

• FALSE

Tim drops a rock off the edge of a 50 meter cliff. What will happen?

• The rock will have negative acceleration

• The rock will have constant velocity

• The rock will have positive acceleration

• The rock will change direction

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

How would you describe the bear's activity during the first 3 hours?

• the bear is moving at a constant velocity

• the bear's acceleration is negative

• the bear is not moving

• the bear's acceleration is positive

Tags

NGSS.MS-PS3-1

Clip pushes his skateboard and lets it roll until it comes to a stop. During the last 4 seconds of motion, his velocity changes from 8 m/s to 0 m/s. What was his acceleration?

• 0.5 m/s²

• 2 m/s²

• 8 m/s²

• -2 m/s²

Tags

NGSS.HS-PS2-1