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4 years ago

Ejdjsjdjskskdkdkdkdkdkdkdkdkdkdkdkdjdjdjdjdjdjdjdjd

Physics

2 answers:

Inga [223]4 years ago

6 0

Answer:Ejdjsjdjskskdkdkdkdkdkdkdkdkdkdkdkdjdjdjdjdjdjdjdjd!

Explanation:

riadik2000 [5.3K]4 years ago

5 0

DOEOUEPUROYEOYEKYDKDLYDYLDULDULDULDLUDULDLYDLUDLUDLUDLUDLUDULSOYDYODYODOYXYL I LUV MY DADDY MY SUPER HIRRO

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In 1991 at smith college, in massachusetts, ferdie adoboe ran 1.00 × 102 m backward in 13.6 s. suppose it takes adoboe 2.00 s to

Alik [6]

as it is given that it covers a total distance 1 * 10^2 m

total time taken by it = 13.6 s

now the average speed is given as ratio of total distance and total time

$v = \frac{d}{t}$

$v = \frac{1* 10^2 }{13.6}$

$v = 7.35 m/s$

so the average speed will be 7.35 m/s

now if it starts from rest and achieve the final speed as 7.35 m/s

now we can use kinematics

$v_f = v_i + at$

$7.35 = 0 + a* 2$

$a = 3.68 m/s^2$

so its acceleration will be 3.68 m/s^2

4 0

4 years ago

A dynamite blast at a quarry launches a rock straight upward, and 1.7 s later it is rising at a rate of 17 m/s. Assuming air res

Shtirlitz [24]

Answer:

(a) $v_0= 34m/s$

(b) $v=14m/s$

Explanation:

We can derive the initial speed of the rock from the equation of the speed in function of the time:

$v=v_0-gt\\\\\implies v_0=v+gt$

Using the given values for the speed at time t=1.7s, we get:

$v_0=17m/s+(9.8m/s^{2})(1.7s)=34m/s$

In words, the speed of the rock at launch is 34m/s (a).

Next, we use this to calculate the speed at t=4.9s:

$v=v_0-gt\\\\v= 34m/s-(9.8m/s^{2})(4.9s)=-14m/s$

This means that the speed of the rock at 4.9s after the launch is 14m/s (b), and the negative sign means that it is moving downwards.

3 0

3 years ago

HELP ME

Katarina [22]

Explanation:

alike

no contact with the object itself

they can attract objects

they're between 2 objects

difference

source of foundations

type of forces

gravity is only for huge objects

3 0

3 years ago

Read 2 more answers

HELP ASAP!! i’ll mark you the brainliest!!

Triss [41]

Answer:

yes

Explanation:

6 0

3 years ago

How is a scientific law different than a scientific theory ?

OLga [1]

Answer: scientific law is the description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it. The explanation of a phenomenon is called a scientific theory

hope this helps

plz mark brainleist

3 0

4 years ago