A. Nebula . Is The Answer !
Answer:
C
Explanation:
A wheel and axle, a lever, and a screw are all simple machines.
A pair of scissors is not a simple machine.
Answer is C.
The revolution of the moon going around earth is what causes the phases of the moon. It depends on exactly what point the moon is facing the earth and how much light is being produced onto it that causes the different phases!
Answer:
V = 20.69 km/h
Explanation:
given data
mass car = 1394 kg
mass truck = 2000 kg
velocity of the truck = 17 km/h
solution
we know that here
m1 v = m1 v1 + m2 v2 ..................... 1
so here
0.5 × m1 × v1i² = 0.5 × m × v1f² × + 0.5 × m2 × v2f²
put here value and we get truck initial velocity
v2f =
put here value
17 = 
V =
V = 20.69 km/h
Answer:
D. 0.75km
Explanation:
first, we have to convert km/h to m/s ( as time is given seconds)
90*1000/3600= 25m/s
cheetah can travel 25 m in 1 sec. therefore, distance it covers in 30 seconds.
25*30/1= 750 meters
in kilometres= 750/1000= 0.75 km
Answer- D. 0.75 km