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zlopas [31]
2 years ago
11

What would be the position of the centre of mass?

Physics
1 answer:
AnnyKZ [126]2 years ago
6 0

Answer: the average position of all the parts of the system, weighted according to their masses.

Explanation:

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A baseball is hit nearly straight up into the air with a speed of 22 m/s. (a) how high does it go ?
AnnZ [28]

So, this is a problem where the accleration is not provided, since it is implied.  The only acceleration is acceleration due to gravity (9.8 m/s)


The equation we will use for this problem is V^2 =V_{0}^2 + 2a (X-X_0)

V is the final velocity, V₀ is the initial velocity, a is the acceleration, X is the final height, and X₀ is the starting height.


We can assume that the ball starts on the ground since no height is given, so now we plug our numbers in.

We will use 0 as the final velocity, since the ball will stop moving upwards when it is the highest.  We will use -9.8 since that is the acceleration due to gravity and we will use 22m/s as V₀ since that is the starting velocity.

V^2 =V_{0}^2 + 2a (X-X_0)\\0^2 = 22^2 + 2\times-9.8(X-0)\\0=484-19.6x\\-484=-19.6x\\24.69387755 = x\\x\approx24.69


So, the ball will go 24.69 meters up


4 0
3 years ago
How many newtons of force are required to move a 54.87 kg object with an acceleration of 9.8 m/s/s?
vodka [1.7K]
Force equals mass*acceleration
F = ma

Given m = 54.87 kg, a = 9.8 m/s^2

F = (54.87)(9.8)
F = 537.726
F = 538 N

A force of al least 538 Newtons is required to move the object.
7 0
3 years ago
PLEASE HELP FAST Five-gram samples of brick and glass are at room temperature. Both samples receive equal amounts of energy due
suter [353]

Answer:

1.The temperature of each sample will increase by the same amount

Explanation:

This is because, since their specific heat capacities are the same and we have the same mass of each substance, and the same amount of energy due to heat flow is supplied to both the glass and brick at room temperature, their temperatures would thereby increase by the same amount.

This is shown by the calculation below

Q = mcΔT

ΔT = Q/mc where ΔT = temperature change, Q = amount of heat, m = mass of substance and c = specific heat capacity of substance.

Since Q, m and c are the same for both substances, thus ΔT will be the same.

So, the temperature of each sample will increase by the same amount

6 0
3 years ago
Compared with the Earth's atmosphere, the atmosphere of Venus is much _______, has a greater percentage of CO2, and has a ______
wolverine [178]
1.A thicker stronger
8 0
3 years ago
A car traveling at 38 m/s starts to decelerate steadily. It comes to a complete stop in 7 seconds. What is its acceleration?
Katena32 [7]

a  = 38 m/s /  7s

a  =  5.43 ms⁻²

8 0
3 years ago
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