Answer:
859.07 N
Explanation:
u = Initial velocity = 1.9 m/s
v = Final velocity
s = Displacement = 0.165 m
a = Acceleration
m = Mass = 890 kg
Equation of motion

Force

The magnitude of the average force on the bumper is 859.07 N
Answer:
1 solar masses
Explanation:
-Sirius has to maintain equilibrium with it's companion.
-Let x be the mass of Sirius and y be the mass of it's companion.
-From the question, we know that Sirius is 2.35 times heavier than it's companion:

Hence, the mass of it's companion is 1 solar masses