3 years ago

Truck covers 40 m in 8.5 seconds slowing to a final speed of 2.8 m/s find original speed

1 answer:

7 0

V = u + at
2.8 = u + a*8.5
2.8 = u + 8.5a

s = ut + 0.5at^2
40 = u*8.5 + 0.5*a*8.5^2
40 = 8.5u + 36.125a

(2.8 = u + 8.5a) * 8.5
23.8 = 8.5u + 72.25a

Subtract those equations
16.2 = - 36.125a
a = 0.448

2.8 = u + (8.5*-0.448)
2.8 = u - 3.8
u = 6.6 m/s

You might be interested in

Which point is closest to 7 on the number line?<br> ET<br> C0

liraira [26]

Answer: ET

Step-by-step explanation:

7 0

2 years ago

At a summer camp, 5 out of 12 campers are signed up for horseback riding. If there are 432 campers at the camp, how many are sig

beks73 [17]

Answer:

The answer is 180.

Step-by-step explanation:

(5/12) x 432 = 180

4 0

2 years ago

A recipe calls for 1 /4 start fraction, 1, divided by, 4, end fraction cup of chocolate chips for each batch of cookies. A

Neko [114]

Answer:

Step-by-step explanation:

1/2 cup = 2/4 cups = 2 × 1/4 cup

Alonzo can make 2 batches that each require 1/4 cup.

6 0

2 years ago

An acute triangle has a side measuring 10 cm and 16 cm. The legnth of the third side is unknown. Which best describes the range

svlad2 [7]

it is from the range of 6<x<26. I hope this helps. Could I possibly get brainliest?

5 0

2 years ago

Read 2 more answers

Which of the following represents the best way to calculate the area of the shaded region?

Komok [63]

Errrrrrr what following. I know that you need to separate the parts into simple shapes eg:triangle and then find the area of all the shapes and add up. All the shapes should make up the shaded area.

4 0

2 years ago