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Veseljchak [2.6K]
3 years ago
9

In the picture at left. The launch height is 10m ball B mass 5kg has a launch velocity of 12 m/s and ball A mass 8 kg has a laun

ch velocity twice that determine the time in flight for both the range for each and explain why the difference is masses is not considered
Physics
1 answer:
Hitman42 [59]3 years ago
8 0

Answer:

24

Explanation:

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Answer:

False

Explanation:

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What two quantities do you have to know to calculate the density of and object?
charle [14.2K]
'Density' is defined as (mass) / (volume). You need enough information to be able to measure or calculate the mass and the volume of the object.
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3 years ago
3. If a car is moving at 90km/hr and it rounds a corner, also at 90km/hr. Does it maintain
dolphi86 [110]

Answer:

Constant speed: yes

Constant velocity: no

Explanation:

Let's remind the definition of speed and velocity:

- Speed is a scalar quantity, which is equal to the ratio between the distance covered (regardless of the direction) and the time taken:

s=\frac{d}{t}

- Velocity is a vector quantity, so it has both a magnitude and a direction. The magnitude is equal to the rate between the displacement of the object and the time taken, while the direction is the same as the displacement.

In this problem, we notice that:

- The speed of the car remains constant, as it is 90 km/h

- However, its direction of motion changes while the car travels round the corner: this means that the direction of the velocity is also changing, therefore velocity is not constant.

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3 years ago
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3 years ago
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I can not solve the problem if I do not have the mass.

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