4 years ago

A train moves from rest to a speed of 40 m/s in 20.0 seconds. What is its acceleration?

Mathematics

1 answer:

alina1380 [7]4 years ago

5 0

Answer: 25m/s

Explanation:

$S1=(2u+v)t \\ =20×20=400m \\ S2=40×20=800m \\ S3=(2u+v)t \\ =20×40=800m \\ Total \: displacement =2000 m \\ Total \: time \: taken =80 m \\ V=802000=25m/s$

You might be interested in

A movie theater sells adult tickets for $13 and student tickets for $8 . Tuesday, a total of 56 tickets were sold, and the total

Marysya12 [62]

Let a ault tickets and s student tickets be sold.
a+s=56
13a+8s=568

s=56-a
13a+8(56-a)=568
13a+448-8a=568
5a+448=568
5a=120
a=24
s=56-24=32

24 adult tickets and 32 student tickets are sold.

7 0

3 years ago

Read 2 more answers

Yall help me please!!!! branliest

svetlana [45]

Answer:

14x^2 -4x+17

Step-by-step explanation:

10x^2 + 3x + 9 - ( -4x^2+7x-8) =

10x^2 + 3x + 9 +4x^2 -7x +8 add the 'like' terms

= 14x^2 -4x + 17

6 0