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Mnenie [13.5K]
3 years ago
14

a piece of clay with mass m is traveling with an unknown velocity in the positive x-direction, when it collides and sticks to a

block of mass 3m, moving with velocity v=-3m/s. after the collision, the block and clay are stuck together and traveling with a velocity of 1 m/s in the negative x-direction. what was the original velocity of the clay mass?
Physics
1 answer:
joja [24]3 years ago
7 0

Answer:

13 m in the + x direction.

Explanation:

Givens

m1 = m

m2 = 3m

v1= ? = x

v2 = - 3 m/s

v3 = v4 = - 1 m/s

Equation

Let x be the speed of the lighter object before collision.

Momentum before collision = momentum after collision

Solution

mx   - 3m * 3m/s = (m1 + m2)*(-1)

m(x - 3*3m/s) = (m + 3m)(-1)

m(x - 9) = - 4m                                      Cancel the ms

x - 9 = 4                                                 Add 9 to both sides

x = 9 + 4

x = 13 m/s

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21) Acceleration from D to E: 1 m/s^2

22) The acceleration of the bus from D to E is 1 m/s^2

Explanation:

21)

The acceleration of an object is equal to the rate of change of velocity of the object. Mathematically:

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In this problem, we want to measure the acceleration of the bus from point D to point E. We have:

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22) This question is the same as 21), so the result is the same.

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4 years ago
How much pressure is applied to the ground
statuscvo [17]

Answer:

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Explanation:

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Now, Force= mg

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Area covered is equal to the area of both stilts(a man generally stands on two feet)

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Now we need to convert to our required units:

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Using the above relations we get,

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