A soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. A soccer player kicks the ball, exerting a constant force of magnitude 40.0 N in the same direction as the ball's motion. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.00 m/s?
A soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. A soccer player kicks the ball, exerting a constant force of magnitude 40.0 N in the same direction as the ball's motion. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.00 m/s?
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Transcribed Image Text:1. INSTRUCTIONS:
Show the 'free body diagrams' completely.
- Show all equations obtained from the free body diagrams, and how equations
are derived from the FBD.
- Show all solutions completely.
A soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. A soccer player kicks the
ball, exerting a constant force of magnitude 40.0 N in the same direction as the ball's motion.
Over what distance must the player's foot be in contact with the ball to increase the ball's speed
to 6.00 m/s?
A child applies a force parallel to the x-axis to a 10.0 kg sled
moving on the frozen surface of a small pond. As the child
controls the speed of the sled, the x-component of the force she
applies varies with the x-coordinate of the sled as shown in Fig.
F
Calculate the work done by when the sled moves (a) from x =
0 to x = 8.0 m; (b) from x = 8.0 m to x = 12.0 m; (c) from x = 0 to
12.0 m.
F, (N)
10
5
00
8
12
x (m)
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