Worksheets2-D Motion Review for Physics
Total questions: 35
Worksheet time: 51mins
An airplane flying 158 km/h South has a headwind of 20 km/h. The plane's resultant velocity is
178 km/h South
138 km/h South
159 km/h South
138 km/h North
A swimmer is swimming 8 m/s east in a river with a current of 2 m/s east. What is the swimmer's resultant velocity?
8 m/s east
10 m/s east
6 m/s east
8.24 m/s east
When you have parallel vectors, which steps do you use to find resultant velocity?
Add or subtract numbers to get magnitude.
Use Pythagorean theorem to find magnitude.
State the direction by looking at which vector is largest.
State the direction by doing inverse tan.
To find the angle of a the resultant when combining perpendicular vectors you use the inverse
(a)
Adding two vectors together will give you the _______ vector.
resultant
component
tangent
direction
The numerical amount of size of a vector is its
(a)
The ________ of the resultant is given by an angle in degrees and/or map directions like N, S, E, and W.
magnitude
direction
component
hypotenuse
What math process is used to add perpendicular vectors?
add/subtract
average
sin and cos
Pythagorean theorem
The path of a projectile is called the
trajectory
path
curve
it doesn't have a name
What is true about the horizontal motion of a projectile?
It accelerates backwards at 9.81 m/s2
It accelerates forwards at 9.81 m/s2
It moves at a constant horizontal velocity.
It cannot be determined.
What is true about the vertical motion of a projectile?
It accelerates downwards at 9.81 m/s2
It accelerates upwards at 9.81 m/s2
It moves at a constant vertical velocity.
It cannot be determined.
If you throw a baseball straight up, what is its velocity at the highest point?
10 m/s
9.8 m/s
0 m/s
Impossible to tell
If you throw a baseball straight up, what is its acceleration at the highest point?
-9.8 m/s2
-10 m/s2
0 m/s2
-25 m/s2
What is the horizontal acceleration of a projectile?
0 m/s2
9.8 m/s2
10 m/s2
25 m/s2
What is the vertical acceleration of a projectile?
0 m/s2
9.8 m/s2
10 m/s2
25 m/s2
A ball is thrown horizontally at a height of 2.20 meters at a velocity of 65.0 m/s. Assume no air resistance. How far did the ball travel horizontally when it hit the ground?
14.3 m
30.5 m
65.0 m
43.6 m
A bullet is fired horizontally at a velocity of 950.0 m/s, and strikes a target 500.0 m away. Assume no air resistance. How far did the bullet travel fall when it hit the target?
1.357 m
489.32 m
0.0571 m
346.00 m
A ball is projected horizontally from the edge of a table that is 1.00 m high, and strikes the floor at a point 1.20 m from the base of the table. What is the initial speed of the ball?
2.66 m/s
3.21 m/s
2.04 m/s
3.96 m/s
At what point is vy= 0 m/s?
A
B
C
D
None of these points
At what point is vx= 0 m/s?
A
B
C
D
None of these points
Which vector pair (arrow pair) correctly represents the acceleration and velocity at point P?
Who do you agree with?
Anita: “A projectile’s vx changes because of gravity, and its vy remains constant.”
Barry: “Both vx and vy are constant.”
Chris: “A projectile has no acceleration in the vertical dimension but it does accelerate horizontally.”
Dave: “A projectile has vertical acceleration and a constant horizontal velocity”
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground first?
A
B
Both at the same time
Suppose Lemming A runs off the edge of the cliff at 2 m/s and Lemming B runs off the edge at 1 m/s. Which will hit the ground farther from the base of the cliff?
A
B
Both at the same distance
A package is dropped from an airplane, where will the package hit the ground?
A
B
C
A soccer ball is kicked at an angle of 36 degrees up in the air. It has a horizontal component of 12 m/s and a vertical component of 4 m/s in the initial position. Which of these statements is true at the top of the trajectory?
a=9.8 m/s2 downward
a=0 m/s2
vx=0 m/s
vx=12 m/s
vy=0 m/s
Cam Reddish goes for 3 and shoots the basketball with a velocity of 9 m/s at an angle of 68 degrees above the horizontal. What is the velocity of the ball at the top of the trajectory?
0 m/s
9 m/s
3.4 m/s
8.3 m/s
