willingtolearn
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#1
A 5 g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the .82 m long barrel of the rifle ?
--------------------------
m = .005 kg
v (initial) = 320 m/s
d = .82m
F = ma
but i don't know how to find a
#2
The parachute on a race car of weight 8820 N opens at the end of a quarter-mile run when the car is traveling at 35 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1000m?
--------------------------------------
d = 1000m
Totally got no idea
Help please ? I am sick in these day, so my mind not really on it !
A 5 g bullet leaves the muzzle of a rifle with a speed of 320 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the .82 m long barrel of the rifle ?
--------------------------
m = .005 kg
v (initial) = 320 m/s
d = .82m
F = ma
but i don't know how to find a
#2
The parachute on a race car of weight 8820 N opens at the end of a quarter-mile run when the car is traveling at 35 m/s. What total retarding force must be supplied by the parachute to stop the car in a distance of 1000m?
--------------------------------------
d = 1000m
Totally got no idea
Help please ? I am sick in these day, so my mind not really on it !
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