Practice Test: AP Physics C Vectors 

Unit Plan Practice Test Study Guide

AP Physics C Practice Test Vector Addition

 

Name _____________________________ Period _____________ Date __________________

Assume magic land conditions on all problems unless stated otherwise. In other words there is no air resistance or friction.

1

)

An object accelerates downward at 3 m/s/s what is the direction of the net force acting on the object?
Downward. The net force and acceleration go in the same direction

2

)

An object is displaced 90 meters to the north. What is the direction of the object's average velocity?
To the north. The displacement and velocity go in the same direction.

3

)

What is the relationship of the magnitudes of a vectors components?
Independent

4

)

What is the relationship of the directions of a vectors components?
Right angles. Remember, components align with either the x, y, or z axis.

5

)

A vector has a y-component of 23 N and an x-component of - 37 N. Find the vector's magnitude.
Magnitude = 43.6

6

)

If a ball is throw with a velocity of 50 m/s at an angle of 37 degrees above the horizontal, what is its horizontal velocity component?
40 m/s

7

)

When adding two vectors, the resultant will be greatest when the angle between the two vectors is _________________.
0 degrees, They're in the same dimension and going in the same direction.

8

)

The x-component of a vector = 30 and the y-component = 40. Find the angle of the resultant vector.
53 degrees

9

)

You have a 12 N force and a 5 N force. When they are added together, what are the maximum and minimum magnitude possible forces? Assume you can manipulate the angle.
Max = 17, min = 7

10

)

Calculate the minimum time for Running Bear to swim across a raging river with a current of 2.5 m/s if he can swim at 2.0 m/s and the raging river is 100 m wide.
Min time = 50 sec

11

)
Calculate the time for Running Bear to swim straight across a raging river with a current of 1.5 m/s if he can swim at 2.0 m/s and the raging river is 100 m wide.
Time = 76 sec

 

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