Chapter 3 Forces and Motion

Jane is sitting in the family car. Her mother is driving her from their house to the library. Jane waves as she passes her friend Marina. Which of the following is not moving with respect to Jane?

• Marina
• the family car
• the library
• Jane's house

Which of the following is the best reference point for describing the motion of the planets in our solar system?

• a space ship in orbit about Earth
• the center of the Milky Way
• Earth
• the sun

What is a reference point used to determine?

• motion
• velocity
• speed
• acceleration

How do you calculate speed?

• D/T
• D x T
• final speed-initial speed/T
• initial speed-final speed/T

The distance an object moves per unit of time.

• acceleration
• speed
• motion
• friction

When you know both speed and the direction of an object , then you know the ___________ of the object.

• velocity
• acceleration
• directional speed
• unbalanced speed

What is this graph representing?

• Constant Speed
• Acceleration (speeding up)
• Deceleration (slowing down)
• No motion

The distance-time graphs shown represent the motion of a car. Which of the following graphs represents the car at constant speed?

• graph A
• graph B
• graph C
• graph D

The following graph is important in explaining?

• Distance vs Time Graph. This graph can represent motion within object by identifying if an object is in motion, or not in motion.
• Speed vs. Time Graph. This graph can represent motion within object by identifying if an object is in motion, or not in motion.

Tags

NGSS.MS-PS3-1

What two measurements are necessary for calculating speed?

• Mass and time
• Temperature and mass
• Mass and distance
• Distance and time