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Readme [11.4K]
2 years ago
11

HELP!!!!! PROJECTILE MOTION TRUE OR FALSE::

Physics
1 answer:
Andru [333]2 years ago
5 0

Answer:

false

Explanation:

hope you can understand

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A speed-time graph is shown below:
alexandr1967 [171]

Answer:

<em>The average acceleration of the object is 0.5 cm/s^2</em>. Answer: A)

Explanation:

<u>Average Acceleration</u>

The average acceleration of a moving object is the rate at which the speed changed over time in a specific period. It can be calculated as follows:

\displaystyle \bar a=\frac{v_f-v_o}{t}

Where vf is the final speed, vo is the initial speed and t is the time.

The speed-time shows the speed starts at 0 cm/s and ends at 4 cm/s over the 8 seconds period. The average acceleration is:

\displaystyle \bar a=\frac{4-0}{8}=0.5

The average acceleration is 0.5 cm/s^2

A) Correct. The average acceleration is 0.5 cm/s^2

B) Incorrect. The average acceleration is 0.5 cm/s^2

C) Incorrect. The average acceleration is 0.5 cm/s^2

D) Incorrect. The average acceleration is 0.5 cm/s^2

3 0
3 years ago
A box is being pulled to the right over a rough surface. t &gt; fk , so the box is speeding up. Suddenly the rope breaks. What h
irga5000 [103]

Answer:

a. keeps its speed for a short while, then slows and stops. slows steadily until it stops.

Explanation:

Since the tension in the rope, t is greater than the kinetic friction fk, the box is moving forward because there is a net force on it. That is, t - fk = f = ma.

Since there is a net force, there is an acceleration and thus an increasing velocity.

When the rope breaks, the tension, t = 0. So, t - fk = 0 - fk = -fk = ma'.

Now, the net force acting on the box is friction in the opposite direction. This force tends to slow the box down from its initial velocity at acceleration, 'a' until its velocity is zero, where it stops. Since the frictional force is constant, the acceleration, a' on the box is thus constant and the box undergoes uniform deceleration until its velocity is zero.

<u>So, the box keeps its speed for a short while, then slows and stops. slows steadily until it stops.</u>

So, the answer is a.

7 0
3 years ago
PLZ HELP
lianna [129]
The air movements toward the equator are called trade winds, which are warm, steady breezes that blowalmost continuously. The Coriolis Effect makes the trade winds appear to be curving to the west, whether they are traveling to the equator from the south or north. Answer trade wind
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3 years ago
Find out how the position of the Sun would be different at 12:00 midday in December than in June. What path would the sun take f
Ratling [72]

Answer:

Explanation: The Sun is directly overhead at solar noon at the Equator on the equinoxes, at the Tropic of Cancer (latitude 23°26′11.2″ N) on the June solstice and at the Tropic of Capricorn (23°26′11.2″ S) on the December solstice.

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3 years ago
What makes a planet different from other celestial bodies?.
Serggg [28]

Answer:

It's more habitable.

Explanation:

The atmosphere, calculated to equations, are a lot more pulled down.

5 0
3 years ago
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