Answer:
1. s = d/t
22. d = 3km = 3000m
t = 2m = 60s
s = 3000/60
= 300/6
= 50m/s
Therefore, the speed of the car is 50 m/s.
23. s = 60km/hr
t = 2hrs
d = s × t
d = 60 × 2
d = 120km
The car travels for 120km.
24. s = 10mile/hr
d = 35km
t = d/s
t = 35/10
t = 3.5hrs
The girl takes 3.5 hours to cover the distance
REALISM shows things as they REALLY look.
The suspended ash made for some some spectacular sunsets! Sulfuric acid was spread worldwide, increasing acidity of rain. Ash deflected energy from the sun, causing a slight drop on global temps for a few years.
Answer:
true
Hoped this helped(⁄ ⁄>⁄ ▽ ⁄<⁄ ⁄)
Answer:
v(t) = 21.3t
v(t) = 5.3t
Explanation:
When no sliding friction and no air resistance occurs:
where;
Taking m = 3 ; the differential equation is:
By Integration;
since v(0) = 0 ; Then C = 0
v(t) = 21.3t
ii)
When there is sliding friction but no air resistance ;
Taking m =3 ; the differential equation is;
By integration; we have ;
v(t) = 5.3t
iii)
To find the differential equation for the velocity (t) of the box at time (t) with sliding friction and air resistance :
The differential equation is :
=
=
By integration
Since; V(0) = 0 ; Then C = -48