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Jet001 [13]
3 years ago
7

After a projectile is fired into the air, what is the acceleration in the x-direction? (Assume no air resistance.)

Physics
2 answers:
storchak [24]3 years ago
5 0

Answer:

a_x = 0

Explanation:

When projectile is in air then the force on the projectile is only due to its weight

It is vertically downwards

F_g = mg(-\hat j)

so here since we don't have any air drag or friction due to air so there will be no force along its tangent or along x direction

so the acceleration along x direction will be zero

a_x = 0

a_y = - g

Gre4nikov [31]3 years ago
4 0
Without air resistance, there is no horizontal force on the projectile,
so it has no horizontal acceleration.  The answer is "zero".
 
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A 70.0-kg ice hockey goalie, originally at rest, catches a 0.150-kg hockey puck slapped at him at a velocity of 35.0 m/s. Suppos
brilliants [131]

Answer:

v₂=- 34 .85 m/s

v₁=0.14 m/s

Explanation:

Given that

m₁=70 kg ,u₁=0 m/s

m₂=0.15 kg ,u₂=35 m/s

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70 x 0+ 0.15 x 35 = 70 x v₁ + 0.15 x v₂

70 x v₁ + 0.15 x v₂=5.25                   --------1

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v₂-v₁ = -35        --------2

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4 0
3 years ago
You drive a car 1600 ft to the east, then 2500 ft to the north. The trip took 2.5 minutes. What was the magnitude of your averag
elena-14-01-66 [18.8K]

Answer:

Velocity=6.03m/s

Explanation:

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First we need to find the resultant distance magnitude.To find that we apply Pythagorean theorem to find hypotenuse

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Velocity=\frac{Distance}{Time}\\Velocity=\frac{904.7m}{150s}\\Velocity=6.03m/s

7 0
3 years ago
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