2 years ago

The table below shows the acceleration of gravity on different bodies in the

Physics

2 answers:

Aloiza [94]2 years ago

8 0

Answer:

Pluto

because the the gravitation strength is small, so it will be accelerating slow

ololo11 [35]2 years ago

3 0

Answer:

i think is mercury, im not 100% sure

Explanation:

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How can you say metre cube is a derived unit

riadik2000 [5.3K]

Answer:

The newton (lowercase n!) is a derived unit because its definition consists of multiplication of three defined base units and nothing else. Its meaning is thus derived, not independently defined.

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2 years ago

A boy whirls a stone in a horizontal circle of radius 1.50m and at height 2.00m above level ground. The string breaks, and the s

Eddi Din [679]

Answer:

$a_{cp}=162.2m/s^2$

Explanation:

The time the stone takes to fall can be calculated considering only the vertical component with the formula:

$y=y_0+v_{0y}t+\frac{a_yt^2}{2}$

Taking the inital height as 0m and downward direction positive, since it departs from (vertical) rest we have:

$y=\frac{gt^2}{2}$

Which gives us a time:

$t=\sqrt{\frac{2y}{g}}=\sqrt{\frac{2(2m)}{(9.8m/s^2)}}=0.64s$

Horizontally, on that time the stone travelled a distance x=10m, which means its horizontal speed was:

$v_x=\frac{x}{t}=\frac{10m}{0.64s}=15.6m/s$

Since <u>this speed is the tangential velocity</u> while whirling, the centripetal acceleration of the stone was:

$a_{cp}=\frac{v_x^2}{r}=\frac{(15.6m/s)^2}{(1.5m)}=162.2m/s^2$

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3 years ago

How much KE does the car have if it weighs 450kg and moves at the speed of 23 m/s?

Ray Of Light [21]

Answer:-The formula of to calculate KE = 1/2 m v^2

so we,

KE = 1/2 (450kg)(23m/s)^2

KE = 1/2 ×238050

KE = 119025

Explanation: In Physics Formulas mean everything.

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2 years ago

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Answer:B

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A toy car with a mass of 2.5 kg travels at a velocity of 37 m/s for 2.5 s until it is stopped by a wall. What was the average ac

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I want to say it's A Hope it helps

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3 years ago

Read 2 more answers