Math Mod Unit 9 Practice Test
Study online at https://quizlet.com/_a763xr
1. A force of 550 Newtons will compress a spring of 11 50 N/m
meters. What is the spring constant of the spring?
2. If y varies jointly as x and z , and y=20 when x=15 and 4 4/9
z=6 , find y when x=4 and z=5.
3. The ratio of the length of the leg ____ an acute angle opposite
to the length of the hypotenuse is called the sine of a
right triangle.
4. Joint variation is a relationship where one variable product
varies directly as the _____ of two other variables.
5. The ratio of the length of the _____ opposite an acute leg
angle to the length of the leg adjacent to the acute
angle is called the tangent of a right triangle.
6. Wind resistance varies jointly as an object's surface 21 miles per hour
area and velocity. If an object traveling 55 miles per
hour with a surface area of 24 square feet experiences
a wind resistance of 330 Newtons, how fast must a car
with 48 square feet of surface area travel in order to
experience a wind resistance of 252 Newtons?
7. What force is required to compress a spring with -225 N
spring constant k=750 N/m 0.3 meters?
8. A weather balloon with a volume of 5 liters at a pres- 8 1/3 L
sure of 1.25 will have what volume when the pressure
is 0.75?
9. Complementary angles are two angles the _____ of sum
whose measures are 90 degrees.
1/4
Study online at https://quizlet.com/_a763xr
1. A force of 550 Newtons will compress a spring of 11 50 N/m
meters. What is the spring constant of the spring?
2. If y varies jointly as x and z , and y=20 when x=15 and 4 4/9
z=6 , find y when x=4 and z=5.
3. The ratio of the length of the leg ____ an acute angle opposite
to the length of the hypotenuse is called the sine of a
right triangle.
4. Joint variation is a relationship where one variable product
varies directly as the _____ of two other variables.
5. The ratio of the length of the _____ opposite an acute leg
angle to the length of the leg adjacent to the acute
angle is called the tangent of a right triangle.
6. Wind resistance varies jointly as an object's surface 21 miles per hour
area and velocity. If an object traveling 55 miles per
hour with a surface area of 24 square feet experiences
a wind resistance of 330 Newtons, how fast must a car
with 48 square feet of surface area travel in order to
experience a wind resistance of 252 Newtons?
7. What force is required to compress a spring with -225 N
spring constant k=750 N/m 0.3 meters?
8. A weather balloon with a volume of 5 liters at a pres- 8 1/3 L
sure of 1.25 will have what volume when the pressure
is 0.75?
9. Complementary angles are two angles the _____ of sum
whose measures are 90 degrees.
1/4
