Physical Science S2 Final Study

When you are sitting in a moving train, the other passengers seem to be at rest. This is because of your…

• Speed

• Direction

• Frame of reference

What does the speed of an object measure?

• The distance traveled per unit of time

• The direction of motion

• The starting point of the object

A person walks west 4 blocks, then turns south and walks 4 blocks. The person then turns east and walks 4 blocks. How could the person have made the distance shorter while maintaining the same displacement?

• By walking south 4 blocks from the starting point

• By walking west 2 blocks and south 2 blocks

• By walking north 4 blocks from the starting point

On a speed-time graph, what does a flat line parallel to the time axis represent?

• The object is moving at a steady speed

• The object is not moving

• The object is accelerating

Tags

NGSS.MS-PS3-1

A speed-time graph shows that a cyclist starts from rest and accelerates uniformly to 12 m/s in 8 s. The cyclist then maintains this speed for the next 7 s. Which of the following describes the slope of the speed-time graph from 0 s to 8 s?

• Linear, sloping upward

• Linear, horizontal

• Curved, sloping downward

Tags

NGSS.MS-PS3-1

From which frame of reference in the picture does the airplane appear to be stationary?

• From the airplane’s frame of reference

• From the tree’s frame of reference

• From the building’s frame of reference

What is the most appropriate unit to use to measure the height of the tree?

• Centimeters

• Meters

• Kilometers

Car X covers 400 m in 16 s. Car Y covers 300 m in 16 s. Both cars move at a constant speed. How would the distance-time graphs for these two cars compare?

• The slope of car X’s graph would be steeper than car Y’s

• The slope of car Y’s graph would be steeper than car X’s

• The slopes of the two graphs would be the same.

Which of the following best describes displacement?

• The total length of the path traveled by an object.

• The shortest straight-line distance from the starting point to the ending point, including direction.

• The amount of time taken to travel between two points.

The acceleration due to gravity on the Moon is about one-sixth that on Earth. The weight of an astronaut on the Moon’s surface is about…

• six times greater than on Earth’s surface.

• one-sixth of that on Earth’s surface.

• the same as on Earth’s surface.

Tags

NGSS.MS-PS2-4