Gravity acceleration

The acceleration of an object falling freely near the surface of the earth

1 pts

volume_mute

9.8 m/s^2

11 m/s^2

9 m/s^2

7 m/s^2

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Correct Answer

Explanation

An object falling from a very high platform achieves a speed of ______ by end of second second

1 pts

volume_mute

20 m/s

19.6 m/s

22 m/s

16 m/s

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Explanation

An object falling from a very high platform achieves a speed of ______ by end of third second

1 pts

volume_mute

31 m/s

26 m/s

28 m/s

29.4 m/s

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Explanation

What is the speed of an object thrown upward with a starting speed of 29.4 at third second?

1 pts

volume_mute

0 m/s

2 m/s

1 m/s

0.5 m/s

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Correct Answer

Explanation

What is the right equation relating acceleration, the distance travelled, and the time of fall is?

1 pts

volume_mute

Given v₀ is the original speed, t is the time elapsed, and a is gravity acceleration

d = v₀t + ½ at²

d = v₁t + ⅓ at * 2

d = v₁t + ½ at * 2

d = v₁t + ½ at * 3

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Correct Answer

Explanation

What is the distance covered by an object falling from rest towards ground after 3 seconds?

1 pts

volume_mute

Hint: use acceleration equation

d = v₀t + ½ at²

44.1 m

44 m

38 m

45 m

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Explanation

What is the average speed of an object falling towards ground from rest after 4 seconds?

1 pts

volume_mute

19.1 m/s

19.5 m/s

19.6 m/s

19.4 m/s

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The acceleration of an object falling freely near the surface of the earth

Correct Answer

Explanation

An object falling from a very high platform achieves a speed of ______ by end of second second

Correct Answer

Explanation

An object falling from a very high platform achieves a speed of ______ by end of third second

Correct Answer

Explanation

What is the speed of an object thrown upward with a starting speed of 29.4 at third second?

Correct Answer

Explanation

What is the right equation relating acceleration, the distance travelled, and the time of fall is?

Correct Answer

Explanation

What is the distance covered by an object falling from rest towards ground after 3 seconds?

Correct Answer

Explanation

What is the average speed of an object falling towards ground from rest after 4 seconds?

Correct Answer

Explanation

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