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snow_tiger [21]
3 years ago
14

Lab: Motion

Physics
2 answers:
Margarita [4]3 years ago
8 0

Answer:

Please make sure to modify it so the teacher cant find out you used brainly

Explanation:

Teachers are begginng to catch on to the fact we are using brainly,quizlet and other sites for answers. If you do decide to use it please make sure you take the time to heavly modify it so that if the teachers use something to check if you copieed and paste it they cant find jack diddly squat.

I am Lyosha [343]3 years ago
5 0

Answer: In this lab we wanted to know how motion can be described. So the hypothesis is if the starting height of a sloped racetrack is increased, then the speed at which a toy car travels along the track will increase because the toy car will have a greater acceleration. My prediction is that cars travel faster on higher tracts. So the heighten the track was intentionally manipulated. So it is the independent variable the speed of the car is the dependent variable. The speed at the first quarter checkpoint is 1.09 m/s. The speed at the second quarter checkpoint is 1.95 m/s. The speed at the third quarter checkpoint is 2.373.36 m/s. The speed at the finish line is  2.803.00 m/s. The average speed increases as the height increases.

The cars on the higher track travel farther than the cars on the lower track, in the same time.

This means that the cars on the higher track have a greater average speed than those on the lower track. This is demonstrated by the

slope of the higher track line being greater than the slope of the lower track line.

Explanation: put it in notes then send it to files to compress it to submit it.

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An object is spun around in circular motion such that its period is 0.2 seconds.
kherson [118]

Answer:

a. 5 Hertz

b. 35 rotations

Explanation:

a. Frequency is given by f=\frac{1}{T} where T is the period, in seconds. Given that T=0.2, the frequency of this object's rotation is:

f=\frac{1}{T}=\frac{1}{0.2}=\boxed{5\text{ Hz}}

b. Since one rotation, or period, is completed in 0.2 seconds, divide the amount of time (7 seconds) by the time it takes to complete one revolution (0.2 seconds):

\frac{7}{0.2}=\boxed{35 \text{ rotations}}

3 0
2 years ago
Two people push on a boulder to try to move it. The mass of the boulder is 815 kg. One person pushes north with a force of 65 N.
ivanzaharov [21]

Answer:

0.095 m/s^2

Explanation:

As the 2 force directions are perpendicular (North vs West), we can calculate the magnitude of the net force using the following equation

F = \sqrt{65^2 + 42^2} = 77.4 N

Assuming negligible friction, from here we can calculate the acceleration in accordance to Newton's 2nd law of motion

a = F/m = 77.4 / 815 = 0.095 m/s^2

3 0
3 years ago
How much mass energy could be obtained from the complete conversion of a 235 g hamburger?
Radda [10]
E = mc²
E = 0.235 kg · (3×10⁸ m/s)² = 0.235 · 9×10¹⁶  kg·m/s²
E = 2.115×10¹⁶ J
The answer is d) 2.12×10¹⁶ J
8 0
3 years ago
H2O Cl2 NH3 What do all of these compounds have in common? A) They are all ionic. B) They are all covalent. C) They all are posi
harkovskaia [24]
B. They are all covalent
5 0
4 years ago
how do scientists know that black holes exist A. by running experiments on the sun B. by observing objects and light around blac
NNADVOKAT [17]

Answer:

E. none of the above

Explanation:

I hope thats right

8 0
3 years ago
Read 2 more answers
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