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Kay [80]
3 years ago
9

4)

Physics
1 answer:
Citrus2011 [14]3 years ago
6 0

Answer:

net force is positive downward..B

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Cellus<br> Find the x-component of this<br> vector:<br> 92.5 m<br> 32.0
Mazyrski [523]

Explanation:

x-component:

Vx = Vcos(theta)

= (92.5 m)cos(32.0)

= 78.4 m

5 0
2 years ago
How long does 100m long train take a cross a bridge of length 4.9 km at a speed of 50m/s
elena55 [62]

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it would take 100s for the train to crossthe bridge

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1 year ago
a student lift a 25kg mass at vertical distance of 1.6m in a time of 2.0 seconds. a. Find the force needed to lift the mass (in
zhannawk [14.2K]

Answer:

a. F = 245 Newton.

b. Workdone = 392 Joules.

c. Power = 196 Watts

Explanation:

Given the following data;

Mass = 25kg

Distance = 1.6m

Time = 2secs

a. To find the force needed to lift the mass (in N );

Force = mass * acceleration

We know that acceleration due to gravity is equal to 9.8

F = 25*9.8

F = 245N

b. To find the work done by the student (in J);

Workdone = force * distance

Workdone = 245 * 1.6

Workdone = 392 Joules.

c. To find the power exerted by the student (in W);

Power = workdone/time

Power = 392/2

Power = 196 Watts.

5 0
2 years ago
Question :
riadik2000 [5.3K]

The second law of motion states that: the acceleration of an object is dependent upon two variables: - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object

<h3>Meaning of Motion</h3>

Motion can be defined as the process of changing position willingly or due to a force applied.

Motion can be seen in different forms and types depending on the object.

In conclusion, The second law of motion is used to deduce the formula for acceleration.

Learn more about second law of motion: brainly.com/question/2009830

#SPJ1

8 0
2 years ago
Read 2 more answers
Hello everyone I have a question for you today. So you know we have discovered black holes and have theorized about white holes
Scrat [10]

Answer:

White hole is an impossible object in universe. ... This means that in a hypothetical universe where there is a black and a white hole, in a short time after their first interaction the white hole will become another black hole so that the system will end up with two black holes.

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3 years ago
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