Unit 1.3 Projectile Motion Lesson

Multiple Choice

A projectile is launched at 68.0° above the horizontal and at a speed of 55 m/s. How long will it take the projectile to reach maximum height?

• 1.8 s

• 3.2 s

• 4.5 s

• 5.2 s

Multiple Choice

A projectile is launched at 68.0° above the horizontal and at a speed of 55 m/s. What is the maximum height reached by the projectile?

• 233 m

• 158 m

• 2.6 m

• 133 m

Multiple Choice

A projectile is launched at 68.0° above the horizontal and at a speed of 55 m/s. What is the projectile's x-component of velocity at the maximum height?

• 39 m/s

• 55.7 m/s

• 20.6 m/s

• 32.3 m/s

Multiple Choice

A projectile is launched at 68.0° above the horizontal and at a speed of 55 m/s. What is the horizontal displacement at maximum height?

• 124 m

• 116 m

• 222 m

• 107 m

Multiple Choice

If  $$h\left(t\right)=-16t^2+84t+140$$  ,  what is the value used for gravity?

• -16

• -32

• -9.8

• -4.9

Multiple Choice

If  $$h\left(t\right)=-16t^2+84t+140$$  ,  what is the initial velocity?

• 84 feet

• 84 feet per second

• 140 feet

• 140 feet per second

Multiple Choice

If  $$h\left(t\right)=-16t^2+84t+140$$  ,  what is the initial height?

• 84 feet

• 84 feet per second

• 140 feet

• 140 feet per second

Multiple Choice

If  $$h\left(t\right)=-4.9t^2+18t+43$$  ,  what is the value used for gravity?

• -16

• -32

• -9.8

• -4.9

Multiple Choice

If  $$h\left(t\right)=-4.9t^2+18t+43$$  ,  what is the initial velocity?

• 18 meters per second

• 18 meters

• 43 meters per second

• 43 meters

Multiple Choice

If  $$h\left(t\right)=-4.9t^2+18t+43$$  ,  what is the initial height?

• 18 meters per second

• 18 meters

• 43 meters per second

• 43 meters

Multiple Choice

Write the function that models the path of an object thrown from a height of 12 feet with an intial velocity of 19 feet/sec.

• $$h\left(t\right)=-16t^2+12t+19$$

• $$h\left(t\right)=-4.9t^2+19t+12$$

• $$h\left(t\right)=-4.9t^2+12t+19$$

• $$h\left(t\right)=-16t^2+19t+12$$

Multiple Choice

Write the function that models the path of an object thrown from a height of 25 meters with an initial velocity of 40 meters/sec.

• $$h\left(t\right)=-16t^2+25t+40$$

• $$h\left(t\right)=-4.9t^2+25t+40$$

• $$h\left(t\right)=-4.9t^2+40t+25$$

• $$h\left(t\right)=-16t^2+40t+25$$

Multiple Choice

An object's path is modeled by: $$h\left(t\right)=-16t^2+150t+100$$   HOW LONG until max height?

• 451.6 seconds

• 4.7 seconds

• 100 seconds

• 10 seconds

Multiple Choice

An object's path is modeled by: $$h\left(t\right)=-16t^2+150t+100$$   WHAT is the max height?

• 451.6 feet

• 4.7 feet

• 100 feet

• 10 feet