3 years ago

If the net force acting on an object is zero, its inertia is also zero. True or false

Physics

1 answer:

S_A_V [24]3 years ago

5 0

Answer:

its false

Explanation:

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BigorU [14]

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3 years ago

What is the velocity of a car if it travels east 340 meters in 10 seconds? V = d/t

Nadya [2.5K]

Answer:

The awnser is d

Explanation:

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Which word is not a good way to describe exercise?

Karolina [17]

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3 years ago

A train departs from its station at a constant acceleration of 5 m/s. What is the speed of the train at the end of 20s?

morpeh [17]

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3 years ago

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A rock is thrown downward at a speed of 8.5 m/s and hits the ground 2.25 seconds later. From what height was the rock thrown? Wh

vekshin1

Answer:

The velocity and height is 31 m/s and 44.4 m respectively .

Explanation:

Given :

Initial speed of rock , u = 8.5 m/s .

Time taken to reach ground , t = 2.25 s .

Also , acceleration due to gravity is , $g=10\ m/s^2$ .

Now , to find the velocity when it hit ground .

Applying equation of motion :

$v=u+at\\v=8.5+10\times 2.25\\v=31\ m/s$

Also , height from which rock is thrown is given by :

$h=ut+\dfrac{at^2}{2}\\\\h=8.5\times 2.25+\dfrac{10\times 2.25^2}{2}\\\\h=44.4\ m$

Hence , this is the required solution .

7 0

3 years ago