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3 years ago

A projectile is fired from the origin (at y = 0 m) as shown in the diagram

Physics

1 answer:

Natasha2012 [34]3 years ago

6 0

Answer:

$v_{x}$ = $v_{ox}$ = 140 m / s

Explanation:

This is a projectile launch, in this case the components of the initial velocity are seen

Since there is no rice in the X axis, so the velocity is vx, it must be constant, at all times

$v_{x}$ = $v_{ox}$ = 140 m / s

The vertical component of velocity changes due to having applied the gravity fiate

$v_{y}$ = $v_{oy}$ - g t

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rodikova [14]

Answer: First option

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3 years ago

A relatively small impact crater 20 kilometers in diameter could be made by a comet 2 kilometers in diameter traveling at 25 km/

nadya68 [22]

Answer:

$KE=1.3\times 10^{21}\ J$

$KE=3.1\times 10^{5}\ E$

Explanation:

(a)

Given:

mass of comet, $m=4.2\times 10^{12}\ kg$

velocity of the comet, $v=2.5\times 10^4\ m.s^{-1}$

Now, the kinetic energy of the comet can be given by:

$KE=\frac{1}{2} m.v^2$

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$KE=1.3\times 10^{21}\ J$

(b)

Given:

energy released by 1 megaton of TNT, $E=4.2\times 10^{15}\ J$

Now the kinetic energy of the comet in terms of energy of 1 megaton TNT:

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i.e.

$KE=3.1\times 10^{5}\ E$

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3 years ago

The resistivity of gold is 2.44 × 10-8 Ω · m at room temperature. A gold wire that is 1.8 mm in diameter and 11 cm long carries

tester [92]

Power in a wire where current is flowing can be calculated from the product of the square of the current and the resistance. Resistance is equal to the product of resistivity and length divided by the area of the wire. We do as follows:

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3 years ago

A. Community B. Organism C. Population D. Individual

dimulka [17.4K]

Answer:

i think its B or D

Explanation:

its Individual or Organism

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Read 2 more answers

What is the gradual process through which humans change from birth to adulthood?

Whitepunk [10]

Answer:

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3 years ago