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Novosadov [1.4K]
4 years ago
5

Emilie Sannom drives a rocket powered car to an initial speed of 228 mph(102 m/s) before attempting to make a jump of deadlizard

canyon on a ramp angled at 42 degrees. Assume that the rocket has burned out when she leaves the ramp. If the canyon is 420 m across and both sides are level, will she be able to make the jump? If so, how far from the edge will she land?
Physics
1 answer:
melamori03 [73]4 years ago
7 0

Answer:

Explanation:

Range= U²sin2theta/g

= 102²* sin (2*42)/9.8

= 1054.74m

Yes she will be abable to jump

The distance from the edge will be

(1054.74- 420)m

= 634.74m

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5

if zero falls between two significant numbers it becomes significant.

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4 years ago
A roofer drops a nail that hits the ground traveling at 26 m/s. How fast was the nail traveling 1 second before it hits the grou
ELEN [110]
This problem can be solved using a kinematic equation. For this case, the following equation is useful:

v_final = v_initial + at

where,
v_final = final velocity of the nail
v_initial = initial velocity of the nail
a = acceleration due to gravity = 9.8 m/s^2
t = time 

First, we determine the time it takes for the nail to hit the ground. We know that the initial velocity is 0 m/s since the nail was only dropped. It has a final velocity of 26 m/s. We substitute these values to the equation and solve for t:

26 = 0 + 9.8*t
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The problem asks the velocity of the nail at t = 1 second. We then subtract 1 second from the total time 2.6531 with v_final as unknown.

v_final = 0 + 9.8(2.6531-1) = 16.2004 m/s.

Thus, the nail was traveling at a speed of 16. 2004 m/s, 1 second before it hit the ground. 

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4 years ago
The image shows a model of the gravitational field around Earth. Which best describes the model?
GuDViN [60]

<u>Answer: The model is described by :</u>

The strength of the field increases as you get closer to Earth, as shown by the smaller spaces between the circles.

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According to universal gravitational law, the force acting in the universe between two objects is given by :

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It is clear that the gravitational force depends directly on the product of masses and inversely on the square of the distance between them.

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3 0
4 years ago
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Alekssandra [29.7K]

Normal reaction force on the block while it is at rest on the inclined plane is given as

F_n = mgcos\theta

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m = 46 kg

\theta = 29^o

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3 years ago
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Vlad1618 [11]

Answer:

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We replace in  the  equation (1) :

Ke=\frac{1}{2}*me*ve^{2}

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Ke=4.55*10^{-31} *(1.5)^{2} *(10^{8} )^{2}

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The energy kinetic of the electron is 10.24*10^{33} Joules

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3 years ago
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