Question

@YanaSidlinskiy

Answer 1

29=33+a*2.5

Answer 2

Ok, so I don't know if you have read the theoretical part. But I'll like to discuss few basic things first before we solve this question. Ok?

Answer 3

Do you understand acceleration/deacceleration ?

Answer 4

Acceleration is when the rate inscreases and deacceleration is when spead decreases

Answer 5

Yes, there are two types of motion. One in which the body keeps moving with a constant velocity. Like if its initial velocity is 33 m/s then it will keep moving with this same velocity. The other is accelerated motion in which its velocity will keep increasing at a certain rate.

Answer 6

Cool?

Answer 7

Ok

Answer 8

Now, while solving numerical problems. You just need to keep in mind these 3 equations.

1) V=U+at

2) \(\sf S=Ut + 1/2at^2\)

3) \(V^2=U^2+2as\)

Where,
V=final velocity
U=Initial Velocity
a=acceleration
t=time

Answer 9

and S=distance traveled.

Answer 10

These are popularly called as Equations of motion. Cool?

Answer 11

Yes

Answer 12

Ok, let's start solving the easy pisy question. Read your original question and note down what information is given first.

Answer 13

Initial velocity=?
Final velocity=?
acceleration=?
time=?
distance=?

Answer 14

Can I go shower lol

Answer 15

You can wait for 10 mins. That's what this would take.

Answer 16

Ok ok fine..

Answer 17

I'm sick of this problem.

Answer 18

IV= 33
FV = 29
A= NOT GIVEN
Time=2.5
Distance= Idk

Answer 19

Yes, that's right!
You need to find the distance.

Answer 20

Now see which equation from the above can you use to find S?

Answer 21

2nd

Answer 22

There are two equations which has S in it.

Answer 23

You can use either 2nd or 3rd. Right?

Answer 24

I think so..

Answer 25

But see, you can't use then directly because both of them requires info about acceleration and we don't have it. Correct?

Answer 26

Yes

Answer 27

So, we will have to use the 1st equation to find a and then substitute its value in either 2nd or 3rd equation to get the value of S

Answer 28

But, I gave you an easy way.

\(\sf v=u+at \\ (v-u)/t = a ...... (1)\)

Substituting this value of a in 2nd equation of motion
\(\sf S=ut+1/2 \frac{v-u}{t} \times t^2\\ S=\frac{v+u}2{} \times t\)

Answer 29

Simply put the values in the last equation and you will get the answer.

Answer 30

WTF is U and

Answer 31

U=initial velocity
V=final velocity
S=distance traveled
t=time
a=acceleration