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Nikolay [14]
3 years ago
12

The object having uniform velocity has zero acceleration why​

Physics
1 answer:
AVprozaik [17]3 years ago
6 0

Because that's what "uniform velocity" means.

Uniform velocity means constant speed in a straight line.

Acceleration means changing speed OR changing direction.

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If the initial upward speed of the ball in Activity 7 C.2 is 10m/s, and the ball is releasedat a height of 1.5 m above the oor,
Ulleksa [173]

Answer:

6.5 m above the floor and 5 m above Christine's hand when it reaches the maximum height.

Explanation:

Let g = 10 m/s2 be the gravitational deceleration that affects the ball vertical motion so it comes to the maximum height at 0 speed. We can use the following equation of motion to find out the distance traveled by the ball from where it's thrown:

v^2 - v_0^2 = 2g\Delta s

where v = 0 m/s is the final velocity of the ball when it reaches maximum level, v_0 = 10m/s is the initial velocity of the ball when it starts, g = -10 m/s2 is the deceleration, and \Delta s is the distance traveled, which we care looking for:

0^2 - 10^2 = -2*(-10)\Delta s

\Delta s = 100 / (2 * 10) = 5 m

So the ball is 5 m above Christine' hands when it reaches maximum height, and since the hand is 1.5 m above the floor, the ball is 5 + 1.5 = 6.5 m above the floor when it reaches maximum height.

5 0
3 years ago
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2. If a force is exerted on an object, which statement is true?
Katyanochek1 [597]

Answer:

A small force is applied over a long time interval can produce a large change in the object's momentum

Explanation:

6 0
3 years ago
a man weighs 600 n while on the surface of earth. if he is transported to the planet mythos which has the same mass as earth but
faltersainse [42]

Answer:

24N

Explanation:

Calculation for what his weight would be

Let his WEIGHT on the surface of earth be 600 and Let the RADIUS be 25 which is (5^²) because we were told that the radius is FIVE TIMES larger than earths

Now let calculate his weight using this formula

Weight=Weight on Earth/Radius

Let plug in the formula

Weight=600N/5^²

Weight=600N/25

Weight=24N

Therefore his weight would be 24N

3 0
3 years ago
PLEASE I NEED THIS QUICKLY
saveliy_v [14]

Answer:

should be A

Explanation:

4 0
3 years ago
1. What is the atomic number of an atom? Why is this number important? |
4vir4ik [10]

Answer:

The atomic number is the number of protons in an atom's nucleus.

The atomic number is important, because it determines which element an atom is.

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3 years ago
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