Answer:
0.2695/s
Explanation:
Using the formula for calculating impulse
Impulse = m(v-u) = Ft
M is the mass
v is the final velocity.
u is the initial velocity
F is the force
t is the time
Get the time;
t = m(v-u)/F
t = 0.0055(220)/40
t = 0.0275s
Get the speed of the rifle
v = u+gt.
v = 0+9.8(0.0275).
v = 0.2695m/s
Hence the speed of the rifle is 0.2695m/s
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The numerical value for the acceleration of gravity is most accurately known as 9.8 m/s/s.
Answer:
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

f= force
m=mass
a=acceleration
Explanation:
examples:
riding your bicycle
•your bicycle is the mass, your leg pushing in pedals of your bicycle is the force
pushing a box
•the box is the mass, you are pushing the box
setting a pencil down in a table
•the pencil is the mass, you are puting the pencil down