(Unit 4) Projectile Motion (horizontal and vertical)

What is the shape of the path of any projectile?

• Hyperbola

• Hypotenuse

• Parabola

• Diagonal

What is the direction of the acceleration for any projectile?

• The direction the projectile is traveling.

• Down

• Up

• Sideways

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NGSS.HS-PS2-1

If a projectile is launched horizontally from a height of 12 m, how long will it take to hit the ground?

• 2.45 seconds

• 5.16 seconds

• 1.56 seconds

• 4.25 seconds

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NGSS.HS-PS2-4

A projectile is launched horizontally at 25 m/s from a tower 30 m high. What can I do to increase the time the projectile is in the air?

• Launch with a greater velocity

• Launch downward instead of horizontal

• Launch with a smaller velocity

• Launch from a higher tower

A 5 kg mass and a 10 kg mass are launched horizontally from the same height. Which hits the ground first? (Neglect air resistance)

• The 5 kg mass

• The 10 kg mass

• They will hit at the same time

• It depends on the launch velocity

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NGSS.HS-PS2-4

What effect does the mass of a projectile have on the time it's in the air? (Neglecting air resistance)

• The lighter the projectile, the greater the time in the air

• The heavier the projectile, the greater the time in the air

• It has no effect

• The lighter the projectile, the less the time in the air

The vertical acceleration

of any projectile on Earth ...

• is always 9.8 m/s².

• is always -9.8 m/s².

• depends on the launch velocity.

• depends on the angle of launch.

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NGSS.HS-PS2-4

A plane flying horizontally at 120 m/s drops a crate. When the crate strikes the ground 15 seconds later, what is the magnitude of the horizontal component of its velocity?

• 147 m/s

• 120 m/s

• 1800 m/s

• 8 m/s

When an object is launched horizontally, what is the initial vertical velocity?

• 0 m/s

• It's always 9.8 m/s

• It depends on the horizontal launch speed

• It depends on the color of the object being launched

At which of the following places does a projectile have the greatest vertical acceleration (due to gravity)?

• At the peak of its trajectory

• Half way to the peak

• At the instant it is launched

• All points have the same acceleration

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4