2 years ago

When does a ball that is thrown vertically upwards reach its maximum speed?

Physics

1 answer:

ladessa [460]2 years ago

4 0

As soon as you let go of it it is at its max speed because gravity is constantly pulling it down

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The attraction will vary directly with the separation between the charges.

Burka [1]

No it won't. It'll vary inversely as the square of the separation.

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2 years ago

A 4-kg cat is resting on a bookshelf that is 2 m high. What is the cats gravitational potential energy relative to the floor if

ra1l [238]

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2 years ago

A person carries a box of 100 kg. What is the weight of the box? (g= 9.8 m/s2)

aliina [53]

Answer:

980 newton

Explanation:

100×9.8 = 980

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2 years ago

Influenced by the gravitational pull of a distant star, the velocity of an asteroid changes from from +19.3 km/s to −18.8 km/s o

muminat

As per above given data

initial velocity = 19.3 km/s

final velocity = - 18.8 km/s

now in order to find the change in velocity

$\Delta v = v_f - v_i$

$\Delta v = -18.8 - 19.3$

$\Delta v = -38.1 km/s$

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Part b)

Now we need to find acceleration

acceleration is given by formula

$a = \frac{\Delta v}{\Delta t}$

given that

$\Delta v =- 3.81 * 10^4 m/s$

$\Delta t = 2.07 years = 6.53 * 10^7 s$

now the acceleration is given as

$a = \frac{-3.81 * 10^4}{6.53 * 10^7}$

$a = - 5.84 * 10^{-4}m/s^2$

so above is the acceleration

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2 years ago

As the pressure on a sample of gas increases, the volume of the sample _____. decreases stays the same increases

Allisa [31]

By Boyle's law the volume of the sample decreases, provided temperature is constant.

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2 years ago

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