Question

please guys answer all the questions please and i want appropriate.. i will mark that person brainliest and 200 hearts and i will follow whosoever will answer!

Answer 1

Q19 I wish this will help you
keep questioning like that
and if u like it then it as brainest

Answer 2

Q.1)
Speed=10 m/s
Acceleration=0.5 m/s^2
Needed speed=0 m/s(since we have to bring it to a stop)
And,change in speed = 10 - 0 = 10
So acceleration=Change in speed÷time
Or acceleration*time=Change in speed
Time = change in speed ÷ acceleration
=>10÷0.5=20 seconds
We know that average velocity =>speed+needed speed÷2
=>(10+0)÷2
=>10÷2=5
Then,Distance=Average velocity * Time
=>5*20=100 metres

Q.2)
Radius = 10.5 cm
We need the circumference(the distance) which equals to 2πr
=>2*22/7*10.5
=>462÷7
=>66 cm
Since their are 60 seconds hand
Then the length of each second hand = 66 ÷ 60
=>1.1cm
And since the clocks moves 1 second hand every second,then
The units are as follows
Distance = 1.1 cm
Time = 1 sec
=>1.1cm ÷ 1 second =1.1cm/sec
So the answer is 1.1cm/sec or 0.011m/sec