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Alla [95]
3 years ago
5

a rocket lift off the surface of earth with a constant acceleration of 20 m/sec^2 .how fast will the rocket be going 1 min latte

r?
Physics
2 answers:
vladimir1956 [14]3 years ago
4 0
A = v1-v0/t so v1= a*t (v0 is o m/s) v1=
20m/s * 60 s = 1200 m/s
Helen [10]3 years ago
3 0
"Acceleration of 20 m/s² " means that the rocket is speeding up,
and its speed becomes 20 m/s greater every second.

Since it started out with zero speed, its speed after 1 minute
(60 seconds) is

              (20 m/s /s) · (60 s)  =  1,200 m/s .
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1. Statement A is true.

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2. Statement B it true.

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4 years ago
The distance and direction between starting and ending positions​
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Answer:

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Explanation:

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3 years ago
What are some errors made while doing measuring with a triple beam balance lab
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You are a crane operator using a wrecking ball to demolish an old building. You can choose to use a 100-kg ball or a 150-kg ball
Elenna [48]

Answer:

The answer to the question is

The two balls, although of different masses, could be made to have the same demolishing force by setting the velocity of the 100 kg ball to 1.5 times the velocity of the 150 kg ball.

That is if V₁ is the velocity of the 150 kg ball and  V₂ is the velocity of the 100 kg ball then V₂  = 1.5×V₁ for the demolishing effect of the two balls to be equal.

Explanation:

To answer the we are required to explain the meaning of momentum and state its properties

Momentum is a physical property of an object in motion. It indicates the amount of motion inherent in the object.  An object in motion is said to have momentum

The types of momentum possessed by an object can be classified into either

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An object moving with a velocity, v has linear momentum while a spinning object has an angular momentum

The momentum is given by the formula

P = m × V

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V = velocity

Newtons second law of motion states that, the force acting on an object is equivalent to the rate of change of momentum produced and acting in the direction of the force

Properties of momentum

From the above statements it means that the two balls can be made equivalent by having the appropriate amount of speed. That iis the two balls can have the same momentum thus for equal momentum effect, we have

150 kg × V₁ = 100 kg × V₂

or V₂ = 1.5×V₁

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