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STatiana [176]
3 years ago
14

2. A boy pushes forward a cart of groceries with a total mass of 45.0 kg. What is the

Physics
2 answers:
snow_lady [41]3 years ago
6 0

Answer:

a=1.46\ m/s^2

Explanation:

It is given that,

Mass of the cart, m = 45 kg

Net force acting on the cart, F = 66 N

Let a is the acceleration of the cart with which it is pushed. It can be calculated using Newton's second law of motion as :

F = m a

a=\dfrac{F}{m}

a=\dfrac{66\ N}{45\ kg}

a=1.46\ m/s^2

So, the acceleration of the cart is 1.46\ m/s^2. Hence, this is the required solution.

likoan [24]3 years ago
4 0

Answer:

A aceleração do carrinho é de, aproximadamente, 1,46 m/s².

Explanation:

F=ma

F: force

m: mass

a: aceleration

66 = 45a

a=66/45= 22/15 ≅ 1,4666 m/s²

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Explanation:

We know that force acting on an object due to Earth's gravity on the surface is given by:

mg = G\frac{Mm}{r^2}\\ \Rightarrow g = \frac{GM}{r^2}

where g is the acceleration due to gravity, r would be radius of Earth, M is the mass of Earth and G is the gravitational constant.

It is given that at pole, g = 9.830 m/s² and r = 6371 km = 6371 × 10³ m

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M = \frac{9.830 m/s^2 \times (6371 \times 10^3 m )^2}{6.67 \times 10^{-11} m^3 kg^{-1} s^{-2}}

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4 years ago
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A planet orbits a star, in a year of length 3.37 x 107 s, in a nearly circular orbit of radius 1.04 x 1011 m. With respect to th
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Answer

Given,

Time period of star,T = 3.37 x 10⁷ s

Radius of circular orbit,R = 1.04 x 10¹¹ m

a) Angular speed of the planet

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          a = 3.62 x 10⁻³ m/s²

8 0
3 years ago
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