2D Motion Unit Assessment

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Find quizzes with links back to the content on our 2D Motion Unit Assessment. Questions include two dimensional projectile and non projectile motion

2D Non-Projectile Motion Quiz

2D Non Projectile Motion Quiz

30 m/s 20 degrees west of north

1 / 17

What is true about vector A and B as you see them above?

They have a different direction and the same magnitude

Both direction and magnitude are the same

They have the same direction and a different magnitude

Magnitude includes the number and a unit. Since no numbers are involved the length of the arrow represents the magnitude. The directions are pointing the same way but the lengths are different.

2 / 17

What is the maximum magnitude of vector A and B in any arrangement?

B - A

Greater than B but less than B + A

B + A

Magnitude includes the number and a unit. Since no numbers are involved the length of the arrow represents the magnitude. The directions are pointing the same way but the lengths are different.

Maximum is B + A or A + B

3 / 17

What is the minimum magnitude of vector A and B in any arrangement?

B + A

Greater than B but less than B + A

B - A

Magnitude includes the number and a unit. Since no numbers are involved the length of the arrow represents the magnitude. The directions are pointing the same way but the lengths are different.

Maximum is B + A or A + B

4 / 17

What is the minimum magnitude of vector A and B in any arrangement?

Magnitude includes the number and a unit. Since no numbers are involved the length of the arrow represents the magnitude. The directions are pointing the same way but the lengths are different.

Maximum is B + A or A + B

5 / 17

What is the maximum magnitude of vector A and B in any arrangement?

Magnitude includes the number and a unit. Since no numbers are involved the length of the arrow represents the magnitude. The directions are pointing the same way but the lengths are different.

Maximum is B + A or A + B

6 / 17

How would you describe the direction above?

20 degrees north of west

20 degrees west of south

20 degrees south of west

20 degrees south of north

7 / 17

How would you describe the direction above?

35 degrees east of south

35 degrees south of east

35 degrees south of north

35 degrees north of west

The direction is 35 degrees in the south direction. The south direction is from the baseline east.

8 / 17

What is the east component of the vector above?

41 m/s

65 m/s

16 m/s

26 m/s

You are trying to find the adjacent and have an angle and the hypotenuse

9 / 17

What is the west component of 30 meters per second at 20 degrees to the west of north?

26 m/s

16 m/s

6 m/s

10 m/s

10 / 17

What is the magnitude of the resultant of 50 meters north and 72 meters west?

65 m

103 m

32 m

88 m

11 / 17

What is the direction of the resultant of 50 meters north and 72 meters west?

66 degrees north of west

22 degrees south of west

55 degrees west of north

39 degrees west of north

12 / 17

A vector includes

direction

magnitude

both magnitude and direction

A scalar has a magnitude only which includes a number and unit (15 meters)

A vector has a magnitude and a direction (15 meters north)

13 / 17

50 meters is a

both magnitude and direction

magnitude

direction

A magnitude includes a number and a unit

15 meters (15 is the number) (meters is the unit)

14 / 17

A scalar includes

both magnitude and direction

direction

magnitude

A scalar has a magnitude only which includes a number and unit (15 meters)

A vector has a magnitude and a direction (15 meters north)

15 / 17

North is a

direction

both magnitude and direction

magnitude

A vector has a magnitude and a direction (15 meters north)

16 / 17

20 degrees north is a

scalar

vector

A scalar has a magnitude only which includes a number and unit (15 meters)

A vector has a magnitude and a direction (15 meters north)

17 / 17

An object starts at the origin and travels 3 m east. What must the object do next to for the displacement for be 5 m in a northeastern direction?

walk 3 m north

walk 3 m south

walk 4 m north

walk 5 m northeast

Your score is

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(Click here for the 2D non-projectile section if you are having trouble)

2D Projectile Motion Quiz

Projectile Motion Basics Quiz

Do you know your projectile motion facts?

Find out by taking our quiz

1 / 10

A ball is thrown horizontally at 20 meters per second and takes 1.3 second to hit the ground. What happens to the time the object takes to fall if thrown much faster at 45 m/s?

It would take 1.3 seconds to hit the ground

It would take more than 1.3 seconds to hit the ground

It would take less than 1.3 seconds to hit the ground

The X and Y motion are independent. No matter how fast forward something is thrown, in the Y axis the object acts like it's falling. On earth an object falling from the same height would take the same time to hit the ground no matter how fast forward it is thrown or if it is just dropped. (ignoring air resistance)

2 / 10

What angle would you throw a ball to get the furthest X axis distance?

25° to the horizontal

45° to the horizontal

65° to the horizontal

90° to the horizontal

3 / 10

What angle would you throw a ball to get the greatest Y axis distance?

25° to the horizontal

65° to the horizontal

90° to the horizontal

45° to the horizontal

The greater the angle to the horizontal the further up but less downrange. Directly up or 90° would get you the greatest height (Y axis distance)

4 / 10

If a ball is thrown with a Y component of velocity of 30 m/s what is its Y component of velocity at the top of its flight path?

10 m/s

0 m/s

20 m/s

30 m/s

The acceleration in the air is always 10 m/s² down. This is how much velocity is changing every second. After three seconds starting from a velocity of 30 m/s up the ball has a velocity of 0 m/s at the top. The acceleration is still 10 m/s² down, so one second later the ball would be going 10 m/s down, and 20 m/s down a second after that, then 30 m/s down when returning to the same height.

5 / 10

If a ball is thrown with a Y component of velocity of 30 m/s what is its acceleration at the top of its flight path?

10 m/s/s down

0 m/s/s down

30 m/s/s up

30 m/s/s down

The acceleration in the air is always 10 m/s² down. This is how much velocity is changing every second. After three seconds starting from a velocity of 30 m/s up the ball has a velocity of 0 m/s at the top. The acceleration is still 10 m/s² down, so one second later the ball would be going 10 m/s down, and 20 m/s down a second after that, then 30 m/s down when returning to the same height.

6 / 10

If a ball is thrown with a Y component of velocity of 30 m/s what is the magnitude of Y component of velocity when it returns to the same height?

20 m/s

0 m/s

10 m/s

30 m/s

Magnitude means just the number and not the direction so 30 m/s when it returns to the same height.

7 / 10

If a ball is thrown with a 7 m/s X component of velocity, what is the magnitude of X component velocity if still in the air after 1.3 seconds?

0 m/s

7 m/s

17 m/s

10 m/s

In projectile motion only the Y component of velocity is accelerated. The X component is in constant motion. If it was 7 m/s at the beginning it is still 7 m/s anywhere in the air unchanged.

8 / 10

What is the actual speed of a ball is thrown with an X component velocity of 7 m/s forward and a Y component of velocity of 30 m/s up?

30.1 m/s

7 m/s

10 m/s/s

35.2 m/s

Actual speed would be the hypotenuse of the two vectors placed head to tail. You would do the Pythagorean Theorem.

The direction does not matter because it asks for speed which is a scalar.

9 / 10

What is the actual speed of a ball is thrown with an X component velocity of 7 m/s forward and a Y component of velocity of 30 m/s up when at the top of it's flight path?

30.1 m/s

35.2 m/s

7 m/s

10 m/s/s

At the top of a flight path the y component of velocity is 0 m/s temporarily so speed is only made up of the horizontal component. So 7 m/s here.

10 / 10

In the pilots perspective, how does a package dropped from a plane look like it falls? (Neglecting air resistance)

behind slower than the plane

forward faster than the plane

straight down

The package appears to fall straight down because the X component of velocity of the plane and package are the same.

Your score is

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(Click here for the 2D projectile motion section if you need a refresher)

2D Horizontal Projectile Motion Problems Quiz

Horizontal Projectile Motion Problem Quiz

Do you know how to solve a horizontal projectile motion problem?

Click here to find out.

1 / 4

A ball is kicked horizontally from a 45 meter tall cliff at 20 m/s. How far from the base of the cliff does it land?

60.6 m

23.5 m

46 m

92.1 m

2 / 4

A drone looses battery power from a height of 72 meter while flying horizontally at 12 m/s. How far from the ground below will it land forward? (neglecting air resistance)

92.1 m

23.5 m

60.6 m

46 m