Physics College

A round stone rolls towards the edge of 21 meter cliff. As it reaches the edge of the cliff,
it is moving forward with a speed of 6.7 m/s. How far, horizontally, from the cliff face
will the rock land?

Answers

Answer 1

Answer:

13.9 m

Explanation:

Find time to fall vertically from 21 m to ground then multiply this TIME by the horizontal rate of 6.7 m/s

d = 1/2 a t^2

21 = 1/2 (9.81) t^2     shows t = 2.069 s

2.069 s * 6.7 m/s = 13.9 m

Related Questions

According to the psychoanalytic perspective a personality personality is based on

Answers

The psychoanalytic perspective states that a personality is based on the childhood experiences as well as unconscious mind.

What do you mean by psychoanalytic perspective?

In English, the terms psychoanalytic and psychoanalytical are employed. The latter phrase, which is older, originally just meant "related to the investigation of the human psyche." However, both titles evolved to refer to that as psychoanalysis became recognized as a separate therapeutic discipline. Even while both are still in use, psychoanalysis is the more common descriptor nowadays. Humans are defined as having sexual and violent urges from the perspective of a psychoanalytic lens.

Psychoanalytic theory of personality: a psychoanalytic approach that focuses on each person's unconscious thoughts, beliefs, and memories. It says that these traits affect our personalities and behaviors.

The three level of consciousness are:

Consciousness

According to Freud, every human has a conscious mind that stores all of the information they are aware of about their surroundings. Any ideas, emotions, or even easily recalled memories are all included in the conscious mind. It's all we already know and are conscious of.

Preconsciousness

The level immediately beneath aware is known as preconscious. Everything that is not in the conscious mind but may very simply be recalled and become conscious is included in the preconscious mind.

Unconsciousness

The unconscious mind is the third and last degree of consciousness. Anything that is suppressed, seems to have been forgotten, or any emotion or thought that is not conscious is what is known as the unconscious mind. This could include mistreatment or bullying of children toward their parents.

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A 4 kilogram object accelerates at 2.5 m/s2. What is the net force in Newtons of the object?

Answers

The net force in Newtons of the object is 10N.

Solution:

m1 = 4kg

a = 2.5m/s²

Force m = ma

F = 4 * 2.5 = 10N.

The greater the net force acting on an object the greater its acceleration. Newton's second law of motion summarizes these relationships. We can rewrite the acceleration equation above to find the net force. The net force on an object is the combined effect of all compressive and tensile forces actually acting on the object.

When the forces pushing or pulling an object are unbalanced the object accelerates in the direction of the net force. The net force is the sum of all the individual forces acting on an object. Newton's first law can be viewed as a special case of Newton's second law when the net force F is zero. The acceleration must also be zero.

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