Question

In the absence of friction, gravity, and all other external forces, what kind of speed will an object display if it travels from the bottom to the top of an inclined plane?

Answer 1

Answers choices

A) constant speed
B) increasing speed
C) decreasing speed
D) speed increases and then decreases
E) speed decreases and then increases

Answer 2

its answer is A) constant speed

Answer 3

What about this one
A body travels 10 meters during the first 5 seconds of its travel, and it travels a total of 30 meters over the first 10 seconds of its travel. What is its average speed during the time from t = 5 seconds to t = 10 seconds?
2 meters/second
3 meters/second
4 meters/second
5 meters/second
6 meters/second

Answer 4

If the only force is the force propelling the object up the ramp, then it's motion will be described by an acceleration given by:\[a=\frac{ F }{ m }\]

Answer 5

Note what the object experiences depends on whether it is given speed via an impulse force--and force over a very small amount of time--or whether it's give a constant force over the move up the ramp. Without such a force, the object would not move up the ramp.

Answer 6

@PsiSquared there is no any external force.

Answer 7

If there is no external force, then the object cannot move up the ramp and thus has a constant velocity of zero, unless the object was already in motion.

Answer 8

Yup apply the Newton's first law of motion.

Answer 9

So what's the answer

Answer 10

2nd's answer is 4 meter per second.

Answer 11

Thanks

Answer 12

Which branch of science involves the study of matter and energy?

Answer 13

Yep, 4m/s over the second 5 sec.

Answer 14

Physics.

Answer 15

Answer of first question is A). constant velocity. and the answer of 2nd question is 4 meter per second. and the Physics deals with matter and energy.

Answer 16

Is it physics

Answer 17

YEs.

Answer 18

Galileo’s pendulum theory stated that the time taken to swing through one complete cycle of a pendulum depends on what?
the mass tied to it
the amplitude of the swing
the length of the string
the velocity of the pendulum
the volume of the mass tied

Answer 19

The length of the string

Answer 20

Hey Mr. Malik are you going to able to help me with all my questions please

Answer 21

The period of a pendulum is given by:\[T=2\pi \sqrt{\frac{ l }{ g }}\]where T is period; l is the length of the pendulum; and g is the acceleration of gravity.

Answer 22

sure..

Answer 23

Which is the correct product of the significant figures 3.278 and 4.23?
14
13.9
13.86
13.865
13.86594

Answer 24

13.9

Answer 25

13.9

Answer 26

Of the two figures you carry the number of significant digits equal to the smaller of the numbers given. This is to say if one number has 5 significant digits and the other 2, you only carry 2 significant digits.

Answer 27

Thanks

Answer 28

How many meters is 32 kilometers?
3.2 × 10-5 meters
3.2 × 10-4 meters
3.2 × 103 meters
3.2 × 104 meters
3.2 × 105 meters

Answer 29

That is the 4th one...

Answer 30

Yes my parents are but I am in USA TX

Answer 31

Sir Its 3.2 * 10 ^ 4

Answer 32

Good..

Answer 33

\[3.2 \times 10^{4}\]

Answer 34

Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere as measured from the top of a visible boundary layer. The instruments on board can withstand a temperature of 601 K. At what altitude will the probe's instruments fail?

50 kilometers
80 kilometers
83 kilometers
100 kilometers
111 kilometers

Answer 35

@PsiSquared

Answer 36

Hardest one

Answer 37

I hate physics that's why asking you guys!

Answer 38

Did you guys find the answer

Answer 39

That is 83 km

Answer 40

I guess you don't want to help

Answer 41

The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as measured from the planet's surface). What type of relationship exists between the altitude and the atmospheric density, and what would the atmospheric density be at an altitude of 1,291 kilometers?

inverse plot, 0.45 kilograms/meter3
inverse plot, 0.51 kilograms/meter3
quadratic plot, 1.05 kilograms/meter3
inverse plot, 1.23 kilograms/meter3
inverse plot, 0.95 kilograms/meter3

Answer 42

The temperature is a linear function of depth in the atmosphere. The slope of that function is:\[\frac{ 567K-147.54K }{78.11km-18.4km }=7.02K/km\]Therefore the depth at which the temp is 83.5km or approximately 83km.

Answer 43

Note that you have to give us time to help you. Also note that this isn't a place where answers are supposed to be just handed out. Some learning has to happen. Moderators will step in and stop things if only answers are given out.

Answer 44

Scientists plan to release a space probe that will enter the atmosphere of a gaseous planet. The temperature of the gaseous planet varies linearly with the height of the atmosphere as measured from the top of a visible boundary layer. The instruments on board can withstand a temperature of 601 K. At what altitude will the probe's instruments fail?

50 kilometers
80 kilometers
83 kilometers
100 kilometers
111 kilometers

Answer 45

The density of atmosphere (measured in kilograms/meter3) on a certain planet is found to decrease as altitude increases (as measured from the planet's surface). What type of relationship exists between the altitude and the atmospheric density, and what would the atmospheric density be at an altitude of 1,291 kilometers?

inverse plot, 0.45 kilograms/meter3
inverse plot, 0.51 kilograms/meter3
quadratic plot, 1.05 kilograms/meter3
inverse plot, 1.23 kilograms/meter3
inverse plot, 0.95 kilograms/meter3

Answer 46

These are some hard questions.

Answer 47

w8 some mistake

Answer 48

:)

Answer 49

With the question there is a mistake are you saying

Answer 50

Malik I don't know what's wrong I just have you guys what's on my paper

Answer 51

Actually I am really sorry guys.

Answer 52

Hello
Answer my
Question
Please

Answer 53

0.51

Answer 54

Thanks Malik

Given this graph plotting velocity versus time, estimate the acceleration of object A at points X and Y respectively.

0 meters/second2 and -1 meter/second2
0 meters/second2 and +1 meter/second2
5 meters/second2 and -2 meters/second2
9 meters/second2 and -1 meter/second2
0 meters/second2 and +3 meters/second2

Answer 55

I am having trouble with the graph questions only );

Answer 56

InshaAllah Malik can you help me

Answer 57

5 meter per second suqare and -2 meter per second suqare.

Answer 58

Sir @PsiSquared check the last one.. i'm a bit confused,..

Answer 59

A rocket initially at rest accelerates at a rate of 99.0 meters/second2. Calculate the distance covered by the rocket if it attains a final velocity of 445 meters/second after 4.50 seconds.
2.50 × 102 meters
1.00 × 103 meters
5.05 × 102 meters
2.00 × 103 meters
1.00 × 102 meters

Answer 60

:o

Answer 61

2nd one is correct.

Answer 62

1.00 × 10^3 meters

Answer 63

A van traveling down a slope with a uniform acceleration of 2.15 meters/second2 attains a speed of 20.00 meters/second after 7.00 seconds. What is the initial velocity of the van?
0.00 meters/second
3.65 meters/second
4.95 meters/second
35.05 meters/second
120.75 meters/second

Answer 64

Malik can you help me fast this is due in 3 hours

Answer 65

Hello

Answer 66

Going back to the first question:

In the absence of gravity it does not make sense to refer to the 'bottom' and 'top', or to an inclined plane (it is only inclined to the 'horizontal' which is defined by the direction of gravity)

Answer 67

Which statement correctly defines displacement?
the maximum distance between the starting point and the ending point of a motion
the shortest distance between the starting point and the ending point of a motion
the maximum distance between the starting point and the ending point of a motion, measured in the direction of motion
the distance vector between the starting point and the ending point of a motion
the distance vector between the ending point and the starting point

Answer 68

Answer of 2nd last question is.... 4.95 meter per second

Answer 69

Answer of the above question is.... The shortest distance between the starting point and ending point of a motion.