Choose the force diagram that best represents a ball thrown upward by Peter, at the

Physics

1 answer:

Nataly [62]3 years ago

6 0

Answer:Diagram A

Explanation:

Since the air resistance is to be neglected, only the gravitational force acts on the ball ( and has acted all the way from the throw upward). Diagram A reflects this fact correctly indicating the gravity acting on the ball downward.

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A block of metal which is 20 cm on a side has a mass of 20 kg. What is it’s density? Please answer in MkS (SI) units.

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The density of an object is given by:

D = M/V

D = density, M = mass, V = volume

The volume of the cube V is given by:

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If an object on a horizontal frictionless surface is attached to a spring, displaced, and then released, it will oscillate. If i

Blababa [14]

Explanation:

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