Physics Midterm 2021-2022

Front

What is average speed?

Back

Average speed is the total distance traveled divided by the total time taken. It is measured in km/h.

Front

How do you calculate distance traveled when speed and time are known?

Back

Distance = Speed × Time. For example, if a person jogs at 12 km/h for 2 hours, the distance traveled is 12 km/h × 2 h = 24 km.

Front

What does the equation x=12+5t represent in motion?

Back

In this equation, x is the final position in meters, 12 is the initial position, and 5 is the constant velocity in m/s. The snowmobile moves with a constant velocity of 5 m/s.

Front

What is displacement?

Back

Displacement is the shortest distance from the initial to the final position, including direction. It can be zero if the starting and ending points are the same.

Front

If a snowball is thrown and returns to the same spot, what is its displacement?

Back

The displacement is 0 m because the initial and final positions are the same.

Front

What is the difference between distance and displacement?

Back

Distance is the total path length traveled, while displacement is the straight-line distance between the starting and ending points.

Front

How do you find the magnitude of displacement?

Back

To find the magnitude of displacement, subtract the initial position from the final position and take the absolute value.

Front

What is the formula for calculating average speed?

Back

Average Speed = Total Distance / Total Time.

Front

If a person walks 15.0 m north and then 11.0 m south, what is the total distance traveled?

Back

Total distance traveled = 15.0 m + 11.0 m = 26.0 m.

Front

What is the magnitude of displacement in the previous example?

Back

Magnitude of displacement = 15.0 m - 11.0 m = 4.0 m north.