RC 2

What type of energy transformation occurs in an electric fan?

• electrical energy to mechanical energy

• radiant energy to mechanical energy

• chemical energy to radiant energy

• electrical energy to nuclear energy

A block is pulled 0.90m to the right in 2.5s. What is the block's average speed to the nearest hundredth of a m/s?

• 2.78 m/s

• 0.36 m/s

• 2.25 m/s

• 0.25 m/s

What is the line on this graph showing?

• moving away from starting point at a constant speed

• moving back towards the starting point at a constant speed

• acceleration (getting faster)

• deceleration (getting slower)

Which graph shows the object standing still?

• A

• B

• C

• D

The graph represents the motion of a car over 10 seconds. What is the average speed of the car during the first 4 seconds? (Hint: distance 10 meters and time 4 seconds)

• .4 m/s

• 2.5 m/s

• 10 m/s

• 40 m/s

Tags

NGSS.MS-PS3-1

What is this line of this graph showing?

• moving away from starting point at a constant speed

• moving back towards the starting point at a constant speed

• acceleration (getting faster)

• deceleration (getting slower)

Tags

NGSS.MS-PS3-1

What type of speed is this graph showing?

• constant speed

• not moving

• speed increasing

• speed increasing at a constant rate

Tags

NGSS.MS-PS3-1

What is the motion described in the graph 

• all of above

• constant speed

• constant acceleration

• constant position

Tags

NGSS.MS-PS3-1

A boat moving north in a river at 3 m/s while the current in the river moves south at 1 m/s.

How will the boat be affected if it enters a part of the river where the river is moving south at 2 m/s?

• The boat will move slower.

• The boat will move faster.

• The boat will stop.

• The boat will change directions

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

According to the graph how far does the person travel in the first 5 seconds?

• 2 m

• 10 m

• 0 m

• 5 m

Tags

NGSS.MS-PS3-1