
Projectile Motion
Quiz by Becky Helmer
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12 questions
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- Q1Vertical acceleration is always equal toinitial vertical velocity9.8 m/s20 m/s2initial velocity60s
- Q2Horizontal acceleration is always equal toinitial horizontal velocity0 m/s29.8 m/s2initial velocity60s
- Q3When is the vertical velocity of a projectile the smallest?right after it leaves the groundat the maximum heightright before it hits the ground60s
- Q4The initial horizontal velocity of a projectile is 12.5 m/s. What is the horizontal velocity just before the projectile hits the ground?12.5 m/s25 m/s50 m/s0 m/s60s
- Q5A baseball is thrown with an initial velocity of 14 m/s and is in the air for 2 seconds. Which of the following is constant while the baseball is in the air?accelerationpositionvelocitydisplacement60s
- Q6A rock is kicked horizontally off of a bridge with an initial velocity of 20 m/s and is in the air for 2 seconds. What is the horizontal velocity of the ball just before it strikes the ground?10 m/s40 m/s0 m/s20 m/s60s
- Q7A rock is thrown at horizontally 7 m/s and it remains in the air for 4 seconds. Which equation do you use to find the horizonal displacement?Vfy = Viy + aty = 0.5gt2x = Vx times t60s
- Q8A rock is thrown horizontally at 15 m/s and is in the air for 3.5 seconds. Which equation do you use to find horizontal displacement?x = Vx times ty = 0.5gt260s
- Q9Angie walks 5 miles east, then turns and walks 2 miles west. What is her distance walked?3 miles7 miles10 miles2.5 miles60s
- Q10Angie walks 5 miles east, then turns and walks 2 miles west. What is her displacement?5.4 miles29 miles7 miles3 miles60s
- Q11
Rock A is thrown horizontally off of a cliff with a velocity of 20 m/s. The rock lands 60 m from the base of the cliff. A second rock (Rock B) is dropped from the same height from which Rock A was thrown. If both rocks are released simultaneously, which rock will strike the ground first?
They will strike the ground at the same time.
Rock B
Rock A
30s - Q12
A marble is kicked horizontally off of a 35.75 m high roof at 10 m/s . Which equation do you use to figure out the time?
x = Vx times t
y = .5gt2
30s