Answer:
Acceleration: 
Explanation:
The acceleration of an object is equal to the rate of change of velocity:

where
u is the initial velocity
v is the final velocity
t is the time taken for the velocity to change from u to v
For the space probe in this problem, we have:
u = 100 ft/s (initial velocity)
v = 5000 ft/s (final velocity)
t = 0.5 s (time taken)
Therefore, the acceleration is

Answer:
Friction between two objects causes a transfer of electrons from one object to the other.
Explanation:
B, is older
Because if you look on the scale b is deeper
Answer:

Explanation:
Drag force is given by

C = Drag coefficient is constant
A = Area is constant
= Velocity of the passenger jet = 1200 km/h = 
= Velocity of the prop plane = 
= Density of the air where the jet was flying = 
= Density of the air where the prop plane was flying = 


The ratio of the drag forces is
.