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Lubov Fominskaja [6]
3 years ago
11

10. A child drops a ball from a window. The ball strikes the ground in 3.0 seconds. What is the velocity of the ball the instant

before it hits the ground?​
Physics
1 answer:
vladimir1956 [14]3 years ago
5 0
The velocity of the ball is 30.0 m/s.
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A baseball is released at rest from the top of the Washington Monument. It hits the ground after falling for 6 s. What was the h
alukav5142 [94]

Answer:

Total height (s) = 176.4 m

Explanation:

Given:

Initial velocity (u) = 0 m/s

Time taken (t) = 6 sec

Acceleration due to gravity = 9.8 m/s²

Find:

Total height (s)

Computation:

s = ut + [1/2]gt²

s = (0)(6) + [1/2][9.8][6²]

s = 176.4 m

Total height (s) = 176.4 m

6 0
3 years ago
Janice has just measured the density of an object. Which value is possible? (Density: D = )
Sunny_sXe [5.5K]

By definition, the density of an object is given by:

D = \frac{M}{V}

Where,

M: mass of the object

V: volume of the object

Since the mass and volume of an object are numerical values greater than zero, then it follows that:

D> 0

It is important to respect the units of each measure.

For this case we can use the grams for the mass and cubic centimeters for the volume.

Answer:

A possible value for density is given by:

6 \frac{g}{cm^3}

7 0
3 years ago
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A golf ball has more mass than a tennis ball because it ____. (1 point) takes up more space. contains more matter. contains diff
Elis [28]
D.) Because it has a definite composition...
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2 years ago
A ball is tied to the end of a cable of negligible mass. The ball is spun in a circle with a radius 2.00 m making 0.700 revoluti
Ira Lisetskai [31]
1) find speed (8.8 m/s)
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6 0
3 years ago
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Whenever an object exerts a force on another object, the second object exerts a force o the same amount, but in the ______ direc
Brut [27]

Answer:

Opposite

Explanation:

Newton's third law of motion states that for every action there is an equal but opposite reaction.

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For example, while driving down the road, a firefly strikes the windshield of a car (Action) and makes a quite obvious mess in front of the face of the driver (Reaction) i.e the firefly hit the car and the car hits the firefly.

The ultimately implies that, in every interaction, there is a pair of equal but opposite forces acting on the two interacting physical objects.

Hence, whenever any physical object exerts a force (action) on another physical object, the second physical object exerts a force (reaction) of the same amount, but acting in opposite direction to that of the first physical object.

4 0
3 years ago
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