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gayaneshka [121]
3 years ago
15

A rock is dropped from a tower 70.0 m high. How long does it take for the rock to hit the ground? *

Physics
1 answer:
Veronika [31]3 years ago
3 0

Answer:

3.8 sec

Explanation:

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3 years ago
a stone is thrown upward with a velocity of 72km/hr ,if air resistance is neglected,find the maximum height travelled by it and
Rom4ik [11]

Answer:

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7 0
3 years ago
A student calculates the density of a copper cube to be 4.15 g/cm . If the accepted value is 8.64 g/cm the percentage error in h
Helen [10]

 The percentage error in his experimental value is -51.97%.

<h3>What is percentage error?</h3>

This is the ratio of the error to the actual measurement, expressed in percentage.

To calculate the percentage error of the student, we use the formula below.

Formula:

  • Error(%) = (calculated value-accepted value)100/(accepted............. Equation 1

From the question,

Given:

  • Calculated value = 4.15 g/cm
  • accepted value = 8.64 g/cm

Substitute these values into equation 1

  • Error(%) = (4.15-8.64)100/8.64
  • Error(%) = -4.49(100)/8.64
  • Error(%) = -449/8.64
  • Error(%) = -51.97 %

 

Hence, The percentage error in his experimental value is -51.97%.

Learn more percentage error here: brainly.com/question/5493941

8 0
3 years ago
A cat is dropped out of a window and falls to the ground in 12 seconds. It lands on its feet.
zloy xaker [14]

Answer:

The impact was gravity

Explanation:

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4 0
3 years ago
A 675 kg car moving at 15.7 m/s hits from behind another car moving at 9.6 m/s in the same direction. If the second car has a ma
AveGali [126]

Answer:

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Explanation:

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5 0
3 years ago
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