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2 years ago

Which would result in a judge who is sitting beside the testing ground observing the tennis ball having a speed of 7 m/s?

Physics

1 answer:

Blababa [14]2 years ago

5 0

Considering the frames of reference, the robot has to fire backwards at a speed of 2m/s.

<h3>What is relative velocity?</h3>

The relative velocity is obtained based on the inertial frame of reference. The term velocity is always measured relatively.

Given that the inertial frame of reference is relative to the moving frame then; 7m/s - 9 m/s = -2m/s.

It then follows that the robot has to fire backwards at a speed of 2m/s.

Missing parts:

Basim’s robotics team builds a robot that travels at 9 m/s and can fire a tennis ball at a target.

Which would result in a judge who is sitting beside the testing ground observing the tennis ball having a speed of 7 m/s?

The robot fires the ball forward with a speed of 7 m/s.

The robot fires the ball backward with a speed of 7 m/s.

The robot fires the ball backward with a speed of 2 m/s.

The robot fires the ball forward with a speed of 2 m/s.

Learn more about frame of reference:brainly.com/question/12222532?

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3 years ago

Until a train is a safe distance from the station, it must travel at 5 m/s. Once the train is on open track, it can speed up

nignag [31]

Answer:

The acceleration of the train is 5 m/s².

Explanation:

Acceleration is the change in velocity over a given time interval.

Therefore, acceleration is given as:

$a=\frac{v_{f}-v_{i}}{\Delta t}$

Where, $v_{i}\textrm{ and }v_{f}$ are initial and final velocities and $\Delta t$ is the time interval.

Here, $v_{i}=5\textrm{ m/s},v_{f}=45\textrm{ m/s},\Delta t=8\textrm{ s}$

This gives,

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Therefore, the acceleration of the train is 5 m/s².

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3 years ago

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Darya [45]

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2 years ago

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3 years ago

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What is wavelength?

Wavelength can be defined as the distance between two successive crests or throughs of a wave. It is measured in the direction of the wave. The wavelength of light defined as the distance between the two successive crests or throughs of the light wave.The wavelength of light is the distance between corresponding point in two adjacent light cycles and the frequency.

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