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Over [174]
3 years ago
11

A ball is thrown vertically down from the edge of a cliff with a speed of 4 m/s,

Physics
1 answer:
Serhud [2]3 years ago
3 0
By using the equation speed = distance/time we can solve for distance. The speed is 4 m/s and the time is 12 seconds. We need to rearrange the equation to Speed * Time = distance. 4(12) = 48; 48 = distance. The cliff is 48 meters high.
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3 years ago
An automobile to be transported by ship is raised 8.2m above the dock. If it's GPE is 63,405 J what is the car's mass?
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Answer:

m = 788.2[kg]

Explanation:

The potential energy of a body is defined as the product of mass by gravitational acceleration by height. And it can be calculated by means of the following equation.

E_{pot}=m*g*h

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Now replacing:

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Answer:

D) True. the protostar rotates more quickly.

Explanation:

If the system is isolated, the angular momentum must be retained.

Initial

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Let's examine the answers

A) False. The opposite happens

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D) True. You agree with the above

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Read 2 more answers
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