Which of the following is used to measure speed?

• seconds

• meters

• seconds per meter

• meters per second

Tags

NGSS.MS-PS3-1

A bird flies 50 meters in 10 seconds. What is its speed?

• 0.2 seconds

• 0.2 meters

• 5 seconds per meter

• 5 meters per second

Tags

NGSS.MS-PS3-1

A car travels 4 blocks in 1 minute at a constant speed. Which of the following graphs shows the car’s speed?

• 
• 
• 
• 

Tags

NGSS.MS-PS3-1

A flat horizontal line on a distance-vs.-time motion graph shows

• increasing speed

• decreasing speed

• no speed

• acceleration

Which segment of the motion graph below shows the object moving the fastest?

• A-B

• B-C

• C-D

• D-E

Tags

NGSS.MS-PS3-1

Carts of different masses are placed on a ramp at different heights. Which combination of features will have the greatest gravitational potential energy?

• low mass and low height

• low mass and high height

• high mass and high height

• high mass and low height

Tags

NGSS.MS-PS3-2

Which has the greater effect on the kinetic energy of a moving object, doubling its mass or doubling its speed?

• doubling the object’s mass

• doubling the object’s speed

• doubling both have equal effects

• doubling has no effect at all

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

If there is no force acting on a moving object, it will

• continue moving at the same speed.

• continue moving in the same direction.

• continue moving at the same speed and in the same direction.

• eventually slow down and stop.

What does it take to change the direction or speed of an object?

• more than one force

• an unbalanced force

• a balanced force

• no force

Tags

NGSS.MS-PS2-2

What force is needed to accelerate a 10kg bowling ball at 2 m/s² ?

Newton's Second Law .... Force = mass x acceleration

• 5 N

• 2 N

• 0.2 N

• 20 N

Tags

NGSS.MS-PS2-2