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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 truck covers 47.0 m in 8.60 s while smoothly slowing down to final speed of 2.30 m/s. (a) Find its original speed.
Kruka [31]

Explanation:

Given that,

Distance, s = 47 m

Time taken, t = 8.6 s

Final speed of the truck, v = 2.3 m/s

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a=\dfrac{v-u}{t}.............(1)

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Put the value of a in above equation as :

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8 0
3 years ago
An object traveling at 1.5 rad
Veronika [31]

The object's final velocity, given the data is 10.5 rad/s

<h3>What is acceleration? </h3>

This is defined as the rate of change of velocity which time. It is expressed as

a = (v – u) / t

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  • v is the final velocity
  • u is the initial velocity
  • t is the time

<h3>How to determine the final velocity</h3>

The following data were obtained from the question

  • Initial velocity (u) = 1.5 rad/s
  • Acceleration (a) = 0.75 rad/s²
  • Time (t) = 12 s
  • Final velocity (v) = ?

The final velocity can be obtained as follow:

a = (v – u) / t

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Thus, the final velocity of the object is 10.5 rad/s

Learn more about acceleration:

brainly.com/question/491732

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