The object rises to a height of 20.4 m. So option C is correct.
Explanation:
initial velocity= Vi=20 m/s
final velocity at the top= Vf=0
acceleration= g=-9.8 m/s²
Vf²=Vi²+2gh
0= (20)²+2 (-9.8)h
-200=-9.8h
h=200/9.8
h=20.4 m
Thus the object rises to a height of 20.4 m
Unit lb mean pound. Which equals to about 0.45 kilograms(kg) /4536 grams,while 1kg equals to about 2.2lb.
Hope it helps!
Huhhhh this is confusing ummm hello I guess
Answer:
average speed = 18 miles / hour
Explanation:
Given data
drive = 396 miles
time = 8 am Tuesday to 5 pm Wednesday = 33 hours
lunch = 30 min Tuesday + 30 min Wednesday = 60 min = 1 hour
sleep = 7 pm Tuesday to 5 am Wednesday = 10 hours
to find out
average speed
solution
we know that he take total time = 33 hours and he took rest + luch = ( 1 + 10 hours)
so total travel time is = 33 - 11 = 22 hours
so
average speed = distance / time
average speed = 396 / 22
average speed = 18 miles / hour
The ion has a charge of 1 +.
A neutral ion would have the same number of protons and neutrons. The neutrons have no charge (they're neutral) so they don't matter when it comes to the charge of an ion. This ion has 30 protons (+) and 29 electrons (-). There is 1 more proton than there are electrons so the ion has a charge of 1 +.
