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3 years ago

Can someone help me please??

Physics

1 answer:

Mrrafil [7]3 years ago

7 0

1. Our solar system is the only place in the universe where gravity played a key part in the formation of planets.

2. Rocky planets are small, dense, and orbit relatively close to the sun, compared to the Jovian planets, which are large, less dense, and orbiting far from the sun.

3. _______

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What force is needed to bring a 1.10 × 10^3 kg car moving at 22 m/s to a halt in 20s?

Tems11 [23]

Answer:

A very very big hole and some ramps

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3 years ago

Distance and direction of an object's change in position from a starting point are:

blsea [12.9K]

Answer:

An object changes position if it moves relative to a reference point. The change in position is determined by the distance and direction of an object's change in position from the starting point (displacement). Direction • Direction is the line, or path along which something is moving, pointing, or aiming.

Explanation:

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3 years ago

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A passenger travels from the first floor to the 60th floor, a distance of 210 m in 35 s. what is the elevators speed

Sati [7]

Distance=210m
Time=35s

$\\ \tt\bull\leadsto Speed=\dfrac{Distance}{Time}$

$\\ \tt\bull\leadsto Speed=210/35=6m/s$

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3 years ago

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A rocket ship has several engines and thrusters. While the Solid Rocket Booster (SRB) and main engines only work together during

Alexeev081 [22]

The acceleration of the SRB and main engine during the first 2.0 minutes of flight is 52.16 m/s².

The given parameters;

initial velocity of the engine, u = 1341 m/s
final velocity of the engine, v = 7600 m/s
time of motion, t = 2 minutes = 2 x 60 s = 120 s

The acceleration of the SRB and main engine is calculated as follows;

$a = \frac{\Delta v}{\Delta t } \\\\a = \frac{7600 - 1341}{2 \times 60 s} \\\\a = 52.16 \ m/s^2$

Thus, the acceleration of the SRB and main engine during the first 2.0 minutes of flight is 52.16 m/s².

Learn more here:brainly.com/question/17067013

4 0

3 years ago

A mass of 4.8 kg is dropped from a height of 4.84 meters above a vertical spring anchored at its lower end to the floor. If the

krek1111 [17]

Answer:

45.6 cm

Explanation:

Let x (m) be the length that the spring is compressed. We know that when we drop the mass from 4.84 m above and compress the springi, ts gravitational energy shall be converted to spring potential energy due to the law of energy conservation

$E_g = E_p$

$mgh = 0.5kx^2$

where h = 4.84 + x is the distance from the dropping point the the compressed point, and k = 24N/cm = 2400N/m is the spring constant, g = 9.81 m/s2 is the gravitational acceleration constant. And m = 4.8 kg is the object mass.

$4.8*9.81(4.84 + x) = 0.5 * 2400 * x^2$

$47.088x + 227.906 = 1200x^2$

$1200x^2 - 47.088x - 227.906 = 0$

$x = 0.456m$ or 45.6 cm

5 0

4 years ago