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Otrada [13]
4 years ago
8

Forces cause changes to the motion of objects. Name a force and describe two changes it makes.

Physics
1 answer:
otez555 [7]4 years ago
3 0
Sliding and Static.

Would be the right one here.
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PLZZ HELP ME PLZ I NEED YALL HELP WITH THIS LAST QUESTION
Mamont248 [21]

Answer:

The 5 Forces

Explanation:

The five forces that influence wind speed and direction are: Pressure gradient force (flow from high to low pressure) Coriolis force (apparent deflecting force due to the rotation of the Earth) Turbulent drag (Earth's surface or objects like trees or grass resist air flow and decrease wind speed near the ground)

6 0
3 years ago
A car is travelling at 20m/s, accelerates at 4m/s2 . Calculate its velocity after 5s?
IgorLugansk [536]

Answer:

<u>40 m/s</u>

Explanation:

The final velocity of an object that experiences a period of acceleration is given by:

v - vi = A*t

Initial velocity, vi, is = 20m/s

Acceleration, A, is 4m/2^2

Time, t, is 5 seconds

v - vi = A*t

v - 20m/s = (4m/2^2)/(5 sec)

v = (20 m/s) + (20 m/s)

v = 40 m/s

5 0
2 years ago
Use the impulse-momentum theorem to find how long a stone falling straight down takes to increase its speed from 5.6 m/s to 10.6
Nezavi [6.7K]

As stated, the impulse and momentum definitions will be used to later find the value of time through the force of gravity. According to the theory, the impulse formula is given as,

I = F\Delta t

Here,

F = Force

\Delta t = Change in time

Now using the impulse theorem we have that,

Change in Impulse = Change in momentum

F\Delta t = \Delta p (1)

The change in momentum is given as

\Delta p = p_f -p_i

\Delta p = (-10.6)-(-5.6)

\Delta p = -5m/s

The force due to gravity is through the Newton's second law

F_g = -mg

Here,

m = mass

g = Acceleration due to gravity

Substitute the value in (1)

-mgt = -5m/s

9.8t = 4.9

t = \frac{5}{9.8}

t = 0.51s

Therefore it will take 0.51s.

7 0
3 years ago
If the period of a pendulum were 2.4 s on the moon, which has an acceleration due to gravity of 1.67 m/s^2, then how long would
guajiro [1.7K]
<h2>Reffer the attachment </h2>

Mark as brainlist ❤️❤️

5 0
3 years ago
When two nonmetallic-sheathed cables (Type NM-B) enter a box, is it permitted to bring both of the bare equipment grounding cond
coldgirl [10]

Answer:

Not permitted

Explanation:

It's totally unacceptable to bring both of the bare equipment grounding conductor directly with the grounding terminal of a receptacle because of grounding connection removal and receptacle.

When circuit conductors are terminated on equipment within a metal box, the equipment grounding conductor associated with those circuits must be connected to box to avoid unnecessary discharge of current.

5 0
4 years ago
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