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2 years ago

How fast is the runner moving between 2-3 seconds? Is the other question please help

Physics

1 answer:

Rainbow [258]2 years ago

4 0

Answer:

Concept: Physics analysis

We have a distance vs time graph
That indicates that we are analyzing the distance traveled by either a person or a particle
The runner starts at 4 meters and over the interval of a second runs to 12 meters reaching the 16 meter mark. The runner stood at 16 meter mark for one full second and then runs back 10 meter over the course of one second reaching 6 meter. The runner runs forward again for a second traveling 6 meters, ending at the 12 meter mark.

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How was the lunar regolith formed?

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2 years ago

Which techniques can scientists use to determine the characteristics of Earth's layers? Select the two correct answers.

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Se aplica una fuerza neta de 25 N a una masa de 10 kg. ¿Cuál es la aceleración dada a la masa?

lys-0071 [83]

Answer:

Se queda

Explanation:

Porque 10 kg es más que 25N

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2 years ago

A sprinter starts from rest and runs with constant acceleration to a top speed of 12m/s in 4.0 seconds.

bagirrra123 [75]

Answer:

a = 3,0 m/s²

Explanation:

En este ejercicio se pide calcular la aceleracion del cuerpo, usemos las ecuaciones de cinematica en una dimensión.

v= v₀ + a t

como el corredor parte del reposo si velocidad inicial es cero

v = at

a = v/t

calculemos

a = 12 /4,0

a = 3,0 m/s²

4 0

2 years ago

A person hits a 45-g golf ball. The ball comes down on a tree root and bounces

Verizon [17]

Answer:

Maximum height, h = 10 m

Explanation:

It is given that,

Mass of golf ball, m = 45 g = 0.045 kg

The ball comes down on a tree root and bounces straight up with an initial speed of 14.0 m/s.

We need to find the height the ball will rise after the bounce. It is based on the conservation of energy such that,

$\dfrac{1}{2}mv^2=mgh$

h is maximum height raised by the ball

$h=\dfrac{v^2}{2g}\\\\h=\dfrac{(14)^2}{2\times 9.8}\\\\h=10\ m$

So, the ball will raised to a height of 10 meters.

5 0

2 years ago