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3 years ago

Name three situations in which force is created. describe the cause of the force in each situation

1 answer:

6 0

One situation in which force is created is when an object is moving and a force is created to stop that movement. Second situation is when an object is moving circularly and a force is created to move it towards the middle of the circle. The third situation is when a force is created that goes in the same direction as an object that is in movement.

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Name three ways in which an object can accelerate

shutvik [7]

-Slow down
-Speed up
-Turning
Hope this helps

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3 years ago

A massive block is being pulled along a horizontal frictionless surface by a constant horizontal force. The block must be ______

snow_tiger [21]

Answer:

The body must be moving with a constant non zero acceleration.

Explanation:

Force produces acceleration on any mass it is applied on. The acceleration produced depends on the magnitude and direction of the force. For this block being dragged by a constant horizontal force, The body will undergo a constant non-zero acceleration that will steadily increase its velocity along the direction of the force.

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3 years ago

Niels Bohr's important discovery was?

Tom [10]

In 1912, Bohr was working for the Nobel laureate J.J. Thompson in England when he was introduced to Ernest Rutherford, whose discovery of the nucleus and development of an atomic model had earned him a Nobel Prize in chemistry in 1908. Under Rutherford's tutelage, Bohr began studying the properties of atoms.

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3 years ago

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Which change of state is shown in the model?

Masja [62]

Sublimation is the state shown in the model

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3 years ago

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A particular circular track on level ground has a circumference of 400 m. a walker, traveling counterclockwise and starting at t

Sidana [21]

Answer:

Average speed: 0.5 m/s. Average velocity: 0

Explanation:

Average speed is given by:

$v=\frac{d}{t}$

where

d is the total distance covered (the length, of one lap of the track, so d = 400 m)

t is the time taken to cover that distance (so, t = 800 s)

Substituting,

$v=\frac{400}{800}=0.5 m/s$

Instead, average velocity is defined as

$v=\frac{d}{t}$

where this time,

d is the displacement, which is the vector connecting the starting point to the final point of the motion

t is still the time taken (800 s)

However, in this case the walker starts and finishes his trip at the same point: therefore, the displacement is zero (d=0), and this means that the average velocity is zero as well.

3 0

3 years ago