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3 years ago

Identify the names of animals that lived on Earth before dinosaurs.

Physics

2 answers:

Mumz [18]3 years ago

7 0

Im sure there are others but i know that bugs existed as long as the earth has

Minchanka [31]3 years ago

7 0

Mainly sea creatures such as scorpions, jellyfish, and some other pre-historic creatures. Hope this helps.

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Answer:

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2 years ago

What are two ways in which ultrasound technology produces images

arsen [322]

Fetal and ophthalmic

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3 years ago

Which piece of evidence did Alfred Wegener use to develop the theory of continental drift?

Eduardwww [97]

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3 years ago

Toon Train is traveling at the speed of 10 m/s at the top of a hill. Five seconds later it reaches the bottom of the hill and is

Naddika [18.5K]

Answer:

the rate of acceleration of the train is 4 m/s²

Explanation:

Given;

initial velocity of the train, u = 10 m/s

change in time of motion, dt = 5 s

final velocity of the train, v = 30 m/s

The rate of acceleration of the train is calculated as;

$a = \frac{dv}{dt} = \frac{v-u}{dt} = \frac{30-10}{5} = \frac{20}{5} = 4 \ m/s^2$

Therefore, the rate of acceleration of the train is 4 m/s²

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2 years ago

A fly travels along the x-axis. His starting point is x = 16 m and his ending point 15x = - 25 m. His flight lasts 4.0 seconds H

gogolik [260]

Explanation:

Starting position at x = 16m

Ending position at x = -25m

Time of flight = 4s

Unknown:

Distance flown = ?

Displacement = ?

Speed = ?

Velocity = ?

Solution:

To find the distance flown, we should understand that the body is moving on the x - plane;

So distance = 16 + 25 = 41m

Displacement is 41m to the left or -x axis

Speed is the distance divided by the time taken;

Speed = $\frac{distance}{time}$ = $\frac{41}{4}$ = 10.25m/s

Velocity is 10.25m/s along -x axis

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2 years ago