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REY [17]
3 years ago
14

a stomp rocket takes 1.5 seconds to reach its maximum height what was the initial velocity and what was the maximum height ?

Physics
2 answers:
Zinaida [17]3 years ago
5 0
1) Vf = Vo - gt; Vf = 0 => Vo = gt = 9.8m/s^2 * 1.5s = 14.7 m/s

2) d = Vo*t - gt^2 /2 = 14.7m/s*1.5 - 9.8m/s^2 * (1.5s)^2 / 2 = 11.02 m

 
Roman55 [17]3 years ago
5 0
Below is the solution:

1) Let the acceleration is a m/s^2 and the velocity after 4 sec is v m/s 
<span>=>By v = u + at </span>
<span>=>v = 4a ------------(i) </span>
<span>For 1st phase:- </span>
<span>=>By s = ut + 1/2at^2 </span>
<span>=>s1 = 0 + 1/2 x a (4)^2 </span>
<span>=>s1 = 8a --------------(ii) </span>
<span>For 2nd phase:- </span>
<span>=>By s = vt </span>
<span>=>s2 = 4a x (9.1-4) </span>
<span>=>s2 = 20.4a -------------(iii) </span>
<span>=>By (ii) + (iii):- </span>
<span>=>s1+s2 = 8a + 20.4a </span>
<span>=>100 = 28.4a </span>
<span>=>a = 3.52 m/s^2 </span>
<span>2)(a) By v = u -gt </span>
<span>=>0 = u - 9.8 x 1.5 </span>
<span>=>u = 14.7 m/s </span>
<span>(b) By v^2 = u^2 - 2gh </span>
<span>=>0 = (14.7)^2 - 2 x 9.8 x h </span>
<span>=>h = 11.03 m
</span>
Thank you for posting your question here. 

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S=Vt
110=V(72)
110/72=V
V=1.527m/s
4 0
3 years ago
Explain the relationship between temperature, energy, and motion of particles in an object.
ANEK [815]

Answer:

Explanation:

Temperature is the degree of hotness or coldness of a body.

Energy is the ability to do work by a body. They are of two forms, potential and kinetic energy. Potential energy is due to the position of a body whereas kinetic energy is due to the motion of a body.

Motion is the change in position of a body with time.

Temperature, energy and motion are all related.

Thermal energy is a form of kinetic energy which is concerned about the motion particles. This form of energy results from heat changes in a body which causes temperature differences.

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7 0
3 years ago
What line of code will call force with a value of 10 for mass and a value of 9.81 for acceleration?
Kaylis [27]

Line of code will call force with a value of 10 for mass and a value of 9.81 for acceleration is force(10, 9.81).

<h3 /><h3>Line of code for force and acceleration</h3>
  • In mechanics, acceleration refers to the rate at which an object's velocity with respect to time varies.
  • Acceleration is a vector quantity (in that they have magnitude and direction).
  • The direction of an object's acceleration is determined by the direction of the net force acting on it.
  • Newton's Second Law states that the combined effect of two factors determines how much an item accelerates.
  • The size of the net balance of all external forces acting on the object is, in accordance with the materials used to create it.
  • It inversely proportional to its mass, whereas the magnitude of the net resultant force is directly proportional to the net force.

def force(mass, acceleration):

force_val = mass*acceleration

return force_val

10 is assigned to mass and 9.81 is assigned to acceleration

def force(10, 9.81)

So, Line of code will call force with a value of 10 for mass and a value of 9.81 for acceleration is force(10, 9.81).

Learn more about acceleration here:

brainly.com/question/460763

#SPJ4

7 0
1 year ago
a man is trying to move a piano by himself, but it will not move, what force must they overcome to start the piano moving?
m_a_m_a [10]

Answer:

The friction of the piano and the weight

Explanation:

7 0
3 years ago
The box is pushed to the left with 30 N of force, but does not move. What is the Friction Force?​
Andrews [41]

However here coefficient of friction is not given so unable to calculate.

You can calculate it by below formula.

The formula given by

\\ \sf\longmapsto F_f=\mu N

Or

\\ \sf\longmapsto F_f=\mu mg

u is coefficient of friction

N is normal reaction.

Here..

box doesn't move means the force if limiting friction is greater than applied force.

5 0
2 years ago
Read 2 more answers
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