Question

Homework check?

Answer 1

I got 120 m using sig. figs.

Answer 2

@Shalante

Answer 3

Sure, can you show your work?

Answer 4

yep :)

Answer 5

You have to find the final velocity first so you use the formula \(v=v_0+at\).


\(v=15m/s+3.5m/s^2(5.0s)\\
v=15m/s+17.5m/s \\
v=32.5m/s\)

Then you use the formula \(v^2=v_0~^2+2a(x-x_0)\)

(\(32.5m/s)^2=(15m/s)^2+2(3.5m/s^2)(x)\\
1056.25m^2/s^2=225m^2/s^2+7sec(x)\\
831.25m^2/s^2=7sec(x)\\
x=118.75m\)

so I rounded to 120m.

Answer 6

OH MY GOODNESS. I WROTE A WRONG NUMBER.. one second.

Answer 7

A car has a velocity of 15 m/s. It then accelerates at a uniform rate of 3.5 m/s^2 for the next 5.0 seconds. What distance does the car cover during this time?

Answer 8

that is the right problem.. I looked at the one above it that had 190 lol XD thanks @Shalante for pointing that out

Answer 9

@iambatman come back :O

Answer 10

okay.. so that took too long to type out.. I'm just going to take pictures of the problems and my work and upload them xD

Answer 11

Your process seems fine :)

Answer 12

I did not check the numbers however, I trust you're correct :P

Answer 13

oh okay. thanks lol

Answer 14

Here, I'll close this and you can help with others @Shalante c: