1-A football punter accelerates a football from rest to a speed of 10 m/s during the...
1-A football punter accelerates a football from rest to a speed of 10 m/s during the time in which his toe is in contact with the ball ( about 0.20 s). If the football has a mass of 0.50 kg, what average force does the punter exert on the ball?
2- A 5.0 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 0.82 m long barrel of the rifle?
3- Superman throws a 2400 N boulder at an adversary. What horizontal force must superman apply to the boulder to give it a horizontal acceleration of 12.0 m/s2?
4- At the surface of Jupiter’s moon Io, the acceleration due to gravity is g = 1.81 m/s2 . An objects weighs 44.0 N at the surface of the earth. (a) What is the objects mass on the earth’s surface? (b) What are the mass and weight of the object on the surface of Jupiter’s moon Io?
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1-A football punter accelerates a football from rest to a speed
of 10 m/s during the...
A 4.0-g bullet leaves the muzzle of a rifle with a speed of 328 m/s. What...
A 4.0-g bullet leaves the
muzzle of a rifle with a speed of 328 m/s. What force (assumed
constant) is exerted on the bullet while it is traveling down the
0.75-m-long barrel of the rifle?
A 4.0-g bullet leaves the muzzle of a rifle with a speed of 328 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.75-m-long barrel of the rifle? 765 Your response differs from the correct answer by more...
A punter drops a ball from rest vertically 1 meter down onto his foot. The ball...
A punter drops a ball from rest vertically 1 meter down onto his foot. The ball leaves the foot with a speed of 25 m/s at an angle 42° above the horizontal. What is the impulse delivered by the foot? (Use 0.41 kg for the mass of the ball. Assume the punter faces the +x-direction and that the +y-direction is upward.) Find the impulse in kg · m/s and the direction in degrees counterclockwise from the +x-axis.
A horizontal rifle is fired at a bulls-eye. The muzzle speed of the bullet is 680m/s....
A horizontal rifle is fired at a bulls-eye. The muzzle speed of the bullet is 680m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.025 m below the center. What is the horizontal distance between the end of the rifle and the bulls-eye A puck is moving on an air hockie table. Relative to an X, Y cordinate system at time t = 0 seconds, the x component of the puck's...
A 5.a7g bullet leaves the muzzle of a rifle with a speed of 334m/s. What force...
A 5.a7g bullet leaves the muzzle of a rifle with a speed of 334m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.842 m long barrel of the rifle?
11. Suppose you throw a ball vertically downward with a speed of 49 m/s What would...
11. Suppose you throw a ball vertically downward with a speed of 49 m/s What would be the speed of the ball one second later? 39 m/s. Show calculation: (g = 9.8 m/s) 49 m/s. ) 58.8 m/s. () 10 m/s. () 10 m/s2. 12. What distance will it have travelled after one second? Show calculation: 13. A rifle bullet is fired horizontally at the same instant another bullet is allowed to drop from rest at th Which bullet strikes...
1. A ball of mass 14 kg is rolling towards the wall at 5.00 m/s. After...
1. A ball of mass 14 kg is rolling towards the wall at 5.00 m/s. After the impact with the wall, the ball rolls back at 4.60 m/s. Calculate the magnitude of change in momentum of the ball. 2. A typical rifle has a mass of 3.0 kg. A bullet in that rifle has a mass of 3.0 g. After the bullet is fired, it has a speed of 100 m/s. Calculate the magnitude of average force exerted by the...
A place kicker kicks a football with a speed of 20.0 m/s at an angle of...
A place kicker kicks a football with a speed of 20.0 m/s at an angle of 40.0o upward from the horizontal. What is the speed of the ball after it has traveled a horizontal distance of 30.0 m?
QUESTION 1: A fireworks shell is accelerated from rest to a velocity of 55.0 m/s over...
QUESTION 1: A fireworks shell is accelerated from rest to a velocity of 55.0 m/s over a distance of 0.210 m. (a) How long (in s) did the acceleration last? s (b) Calculate the acceleration (in m/s2). (Enter the magnitude.) m/s2 QUESTION 2: A bullet in a gun is accelerated from the firing chamber to the end of the barrel at an average rate of 5.70 ✕ 105 m/s2 for 9.60 ✕ 10−4 s. What is its muzzle velocity (in...
A 4.50 gram bullet is fired from a rifle at a horizontal speed of 280 m/s....
A 4.50 gram bullet is fired from a rifle at a horizontal speed of 280 m/s. If the rifle has a weight of 25.0 N and is initially motionless, determine the recoil speed of the rifle.
1742 51 0.8 m Trevor Daniel punts the football with a speed of 23 mys at...
1742 51 0.8 m Trevor Daniel punts the football with a speed of 23 mys at an angle of 51° above the horizontal. The ball leaves his foot at 0.8 m above the ground. At the very top of the fight of the football, the ball hits a shaggy seagull, Ignore air resistance This problem DOES need to be witton out for your portfolio EXAMPLE Part Description Detarmine the speed of tho football when it hits the silly A: 14.47...
A 4.0-g bullet leaves the
muzzle of a rifle with a speed of 328 m/s. What force (assumed
constant) is exerted on the bullet while it is traveling down the
0.75-m-long barrel of the rifle?
A 4.0-g bullet leaves the muzzle of a rifle with a speed of 328 m/s. What force (assumed constant) is exerted on the bullet while it is traveling down the 0.75-m-long barrel of the rifle? 765 Your response differs from the correct answer by more...
A horizontal rifle is fired at a bulls-eye. The muzzle speed of the bullet is 680m/s. The gun is pointed directly at the center of the bull's-eye, but the bullet strikes the target 0.025 m below the center. What is the horizontal distance between the end of the rifle and the bulls-eye A puck is moving on an air hockie table. Relative to an X, Y cordinate system at time t = 0 seconds, the x component of the puck's...
11. Suppose you throw a ball vertically downward with a speed of 49 m/s What would be the speed of the ball one second later? 39 m/s. Show calculation: (g = 9.8 m/s) 49 m/s. ) 58.8 m/s. () 10 m/s. () 10 m/s2. 12. What distance will it have travelled after one second? Show calculation: 13. A rifle bullet is fired horizontally at the same instant another bullet is allowed to drop from rest at th Which bullet strikes...
1742 51 0.8 m Trevor Daniel punts the football with a speed of 23 mys at an angle of 51° above the horizontal. The ball leaves his foot at 0.8 m above the ground. At the very top of the fight of the football, the ball hits a shaggy seagull, Ignore air resistance This problem DOES need to be witton out for your portfolio EXAMPLE Part Description Detarmine the speed of tho football when it hits the silly A: 14.47...
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