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WorksheetsVectors/Parametrics Checkpoint
Total questions: 11
Worksheet time: 55mins
Mr. Salaam hits a baseball to Mr. Shakin at 3 ft above the ground with an initial speed of 150 ft/sec and at angle of 18 degrees with the horizontal.
Model the y component with a parametric equation.
y = -16t2+(150 sin 18)t
y = -16t2+(150 sin 3)t+18
y = -16t2+(150 sin 18)t+3
y = 16t2+(150 sin 3)+18
Eliminate the parameter for the following parametric equations.
x = 4 - t
y = 2t + 1
y = 9 - 2x
y = 9 + 2x
y = 7--2x
y = 9 + 2x
Magnitude 485.6mph
Magnitude 485.6mph
Magnitude 485.6mph
Magnitude 510.0mph
A wind that is blowing from the northwest toward the southeast can be represented by a vector. The vector has an eastward component and a southward component. If the eastward component has a magnitude of 5 mph and the southward component has a magnitude of 15 mph, in what direction is the wind blowing?
The wind is blowing in the direction 71.6˚ east of south.
The wind is blowing in the direction 67.5˚ east of south.
The wind is blowing in the direction 22.5˚ east of south.
The wind is blowing in the direction 18.4˚ east of south.
Two parametric equations are shown below where
x=31t +3
y=4t2−7
Which nonparametric equation can be used to graph the curve described by the parametric equations?
y=94(x+1) −7
y=34(x+3)−7
36(x−1)4−7
324(x−3)4−7
Megan hits a baseball 4 ft. above the ground with an initial speed of 150 ft/sec at an angle of 19° with the horizontal. Will the ball clear a 30-foot wall that is 430 ft. away?
Yes
No
A boat in the ocean has a bearing of due east moving at a speed of 50 knots per hour. The current in the ocean is about 6 knots per hour in the bearing of N35˚E.
Write a vector to represent the movement of the boat with the current.
<3.44, 4.91>
<50, 0>
<53.44 , 4.91>
<−46.56 , 4.91 >
A boat in the ocean has a bearing of due east moving at a speed of 50 knots per hour. The current in the ocean is about 6 knots per hour in the bearing of N35˚E.
What is the speed of the boat with the current?
50 kph
7.6 kph
6 kph
53.7 kph
A boat in the ocean has a bearing of due east moving at a speed of 50 knots per hour. The current in the ocean is about 6 knots per hour in the bearing of N35˚E.
At what angle is the boat pushed off its course?
The boat is pushed off course 84.8˚ east of north
The boat is pushed off course 89.9˚ east of north
The boat is pushed off course 35.0˚ east of north
The boat is pushed off course 5.2˚ east of north
