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Blababa [14]
3 years ago
12

8. A sprinter on a school track team is running north at a velocity of 6.0 m/s. After 5.0 s, she

Physics
1 answer:
Marysya12 [62]3 years ago
6 0

Answer:

acc. = 4-(-6) /5= 10/5=2 m/s^2

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If an object with more mass is pushed with the same force as an object with less mass the object with more mass will accelerate?
expeople1 [14]

Answer:

smaller acceleration, so lower change in velocity

Explanation:

To answer this question we examine the equation that relates mass with force and with acceleration: F=m*a.

Since we want to know what happens to the acceleration, we solve for it in the equation: a=\frac{F}{m}

Notice that we are asked what happens when the force applied is the same, but now it is applied in an object with more mass (M).

We therefore would have to compare our initial form:

a=\frac{F}{m} with the new one: a=\frac{F}{M} wher the denominator is a larger quantity, therefore making our division/quotient smaller. Then, we conclude that the acceleration will be smaller, and therefore the change in velocity of the object will be lower.

5 0
3 years ago
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What are the disadvantages of friction ?
lawyer [7]
In general? Well one example could be that if you owned an ice rink and somehow the ice had friction, you wouldn't be able to slide around on it any more to skate because the motion between one solid (your feet) and another (the ice) would increase. An effect of friction is heat, but my mixtape already fire so whats that even matter tbh.
8 0
3 years ago
Which of the following is the SI unit used in measuring the temperature of a hot cup of coffee?
Mrac [35]
Which of the following is the Sl unit used in measuring the temperature of a hot cup of coffee ?


Answer: Kevin 

                Good luck and have a nice day! :D
4 0
3 years ago
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An electric pole casts a shadow of 24 m long . If the tip of the shadow is 25m far from the top of the pole , how high is the po
Vikentia [17]

Answer:

7 m

Explanation:

a^ + b^=c^

a^ + 24^=25^

a^+576=625

a^=625-576

a^=49

a=7

7 0
3 years ago
A ray of light traveling in water (n = 1.33) is incident at the flat surface of a block of glass (n = 1.60). If the incident ray
mel-nik [20]

Answer:

45.19^{\circ}

Explanation:

We are given that

n_1=1.33

n_2=1.6

\theta_1=58.6^{\circ}

We have to find the angle of refraction.

By Snell's law

n_1sin\theta_1=n_2sin\theta_2

Substitute the values

1.33sin58.6=1.6sin\theta_2

sin\theta_2=\frac{1.33sin58.6}{1.6}

sin\theta_2=0.7095

\theta_2=sin^{-1}(0.7095)=45.19^{\circ}

Hence, the angle mad by refracted ray in to the glass with normal=45.19^{\circ}

7 0
4 years ago
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