Question

A body is thrown vertically upward from the surface of the earth. What is the direction of acceleration of the body?

Answer 1

Answer:

The direction of acceleration of the body is downwards.

Explanation:

• It is given that a body is thrown vertically upward from the surface of the earth.
• All bodies on the earth's surface are being acted upon by the force of gravity.
• This force of gravity acts vertically downwards on the body.
• When an object is thrown upwards, the force of gravity pulls it down.
• Hence the object has acceleration equal to 9.8m/s² in the downward direction.

Therefore, the direction of the acceleration of a body thrown vertically upwards is vertically downwards.

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Answer 2

Answer:

It will move at an upward velocity. However, the body is accelerating against gravity (g). G will therefore exert its force on the item, slowing it down.

So acceleration will be downward.

Explanation:

In a detailed manner the directions can be stated as,

• While it is being thrown.

        the acceleration is upwards

        the speed is upwards

• After you’ve released it, but before it starts to fall.

        the acceleration is downwards

        the speed is upwards

• At the moment before it starts to fall.

        the acceleration is downwards

        the speed is zero (no direction for zero)

• After it started to fall down.

        the acceleration is downwards

        the speed is downwards