Projectile Motion

You and your friend are both standing on a building while both holding a ball. Your friend drops the ball and you throw the ball horizontally (straight line, no angle). Which ball hits the ground first?

• The dropped ball

• Both land at the same time

• The thrown ball

• trick question. Neither ball landed because it was a dream!

Tags

NGSS.HS-PS2-1

A duck swims across a river at a constant velocity of 4 m/s north. The current is going down stream at 8 m/s east. If the river is 40 meters across, how long will it take the duck to get to the other side? How far down stream is it? 

• 10.3 sec.
  83.1 meters 
• 8.90 sec. 
  70 meters 
• 9.85 sec. 
  78.5 meters
• 20.0 sec. 
  160 meters
   

A cannon shoots a cannonball off the ground at an angle of 67° north of east with an initial velocity of 1400 meters per second. Find the time the cannon hits the ground. 

• 40.27 s
• 90.15 s
• 2 s
• 80.54 s

Tags

NGSS.HS-PS2-1

Nick shines a laser at an airplane that is located 114° North of East. The laser travels a distance of 12345 meters. How high is the airplane in the air?

• 11978.3 m
• 5021.2 m
• cats
• 27727.3 m

How long is a rock in the air if it is thrown off a 16m cliff if the rock is thrown 20m/s at an angle of 20 degrees above the horizontal?

• 1.31s
• 2.62s
• 1.23
• it would not fall at all the rock is to light

Tags

NGSS.HS-PS2-1

 A man stands at the edge of a building and throws a ball horizontally off the edge with a velocity of 20 m/s. The building is 60 meters above a horizontal road. How long till the ball hits the ground.

• 60s
• 3.5s
• 6.08s
• It never hits the ground it hits the road

How high is a cliff if a rock falls from half way up the cliff and the rock hits a river below 20s later?

• 1960 meters
• 15680 ft
• 2.44 miles
• how could you hear that sound from so far away

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A child chucks a melon strait into the air at 30 m/s. Ignoring air resistance, how long is the melon in flight before it hits the ground. 

• 5.5 sec
• 18 sec
• 7.0 sec
• 6.1 sec

Tags

NGSS.HS-PS2-1

A coin tossed vertically upward and it reaches the highest point in 7.0s. at the highest point, the velocity is _______.

• 9.8 m/s

• 0

• 9.8 m/s² 

• 98 m/s²

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NGSS.HS-PS2-1

A coin tossed vertically upward. when it reaches the highest point where the object momentarily stops, the acceleration of this projectile is _____.

• 9.8 m/s

• 0

• 9.8 m/s²

• 98 m/s²

Tags

NGSS.HS-PS2-1