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The frictional (tangential) force applied to the foot of a runner is 470 N, directed posteriorly. At the same time an upward normal force of 1890 N acts on the same foot. What is the angle formed between the horizontal and the vector that is the resultant (sum) of these two forces acting on the foot? Give your answer to the nearest 0.1 degrees.
A) 14.0 degrees
45.0 degrees
C) 58.0 degrees
D) 76.0 degrees

The frictional (tangential) force applied to the foot of a runner is 420 N, directed posteriorly. At the same time an upward normal force of 1790 N acts on the same foot. What is the magnitude of the resultant (sum) of these two forces acting on the foot? Give your answer to the nearest 1 N.
A) 1790 N
1839 N
C) 1938 N
D) None

A golf ball is hit off the tee with a velocity of 30 m/s at an angle that is 40 degrees above the horizontal. What is the horizontal component of the ball's velocity? Give your answer to the nearest 1.0 m/s.
A) 30 m/s
28 m/s
C) 23 m/s
D) None

A pole vaulter (body mass = 62 kg) has just cleared the bar and is falling to the mat below. What is the pole vaulter's weight? Give your answer to the nearest newton.
A) 0.0 N
608 N
C) 638 N
D) None

b a c c d

theres only 4 questions. obvious troll is obvious

D
B
C
B

1d
2 b
3c
4b

1)d
2)b
3)c
4)b

A 93 kg football player is hit by a tackler who drives him to the right with a force of 1675 N. If the feet of the player who hit are off the ground so we can neglect ground reaction force, what is the player’s horizontal accelartion? Round o the nearest 0.1 m/s/s.
A) 0.5 m/s/s
18.0 m/s/s
C) 217 m/s/s
D) None of the above

The vertical foce applied to the feet of a 75 kg person by the ground is 600 B, directed upward. What is the vertical acceleration of the person center of mass? Round to the nearest 0.1 M/s/s. ( hint first draw a fbd(
A) 1.8 m/s/s up
B)8.0 m/s/s up
C) 9.8 m/s/s,down
D) one of the above

b
b

an MMA fighter punches his oppenent in the chest with his fist, the oppenents chest exerts a force upon the fighters fist.
A. true
B. false

A body with two forces acting upon it could be in mechanical equilibrium
A. true.
B. false

Muscle contraction is produced by attachments formed btween the proteins and the myosin
A. true
B. False

quick help!! due in 4 minutes