A soccer ball with mass 0.470 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.
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- A 1.00-kg object slides to the right on a surface having a coefficient of kinetic friction 0.250 (Fig. P8.62a). The object has a speed of vi = 3.00 m/s when it makes contact with a light spring (Fig. P8.62b) that has a force constant of 50.0 N/m. The object comes to rest after the spring has been compressed a distance d (Fig. P8.62c). The object is then forced toward the left by the spring (Fig. P8.62d) and continues to move in that direction beyond the spring's unstretched position. Finally, the object comes to rest a distance D to the left of the unstretched spring (Fig. P8.62e). Find (a) the distance of compression d, (b) the speed vat the unstretched posi-tion when the object is moving to the left (Fig. P8.624), and (c) the distance D where the abject comes to rest. Figure P8.62A soccer ball with mass 0.460 kgkg is initially moving with speed 2.10 m/sm/s. A soccer player kicks the ball, exerting a constant force of magnitude 38.0 NN 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/sm/s? Express your answer in metersA soccer ball with mass 0.470 kg is intially moving with speed 2.10 m/s. A soccer player kicks the ball, exerting a constant force of magnitude 41.0 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? 0.240 m 0.320 m 0.181 m 0.165 m 0.123 m
- A golf club strikes a 0.062-kg golf ball in order to launch it from the tee. For simplicity, assume that the average net force applied to the ball acts parallel to the ball’s motion, has a magnitude of 6120 N, and is in contact with the ball for a distance of 0.0080 m. With what speed does the ball leave the club?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 ?In an experiment, two students use a launcher to launch a metal ball vertically upward into the air. The launcher exerts an average net force of 80.0N over a vertical distance of 0.400m. The mass of the ball is 115g. To what height above the launch position (ie when the ball leaves contact with the launcher) will the ball rise, if there is no air resistance?
- A 6.0 ✕ 104 kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets are fired along the line of motion to reduce the probe's speed. The retrorockets generate a force of 3.0 ✕ 105 N over a distance of 2400 km. What is the final speed of the probe? m/sAt the start of a race, a four-man bobsled team pushes their sled as fast as they can along a 50 m flat starting stretch. The net force that the four men together apply to the 325 kg bobsled is 964.079 N directed at 15 degrees below the horizontal. As they push, 60 N of kinetic friction opposes them. What is the speed of the sled right before the team jumps on the sled?A 6.26-kg particle is subject to a net force that varies with position as shown in the figure. The particle starts from rest at x = 0. A coordinate plane has a horizontal axis labeled x (m) and a vertical axis labeled Fx (N). There are three line segments. The first segment runs from the origin to (5,3). The second segment runs from (5,3) to (10,3). The third segment runs from (10,3) to (15,0). What is its speed at the following positions? (a) x = 5.00 m = m/s(b) x = 10.0 m = m/s(c) x = 15.0 m = m/s
- On an essentially frictionless, horizontal ice rink, a skater moving at 4.0 m/s encounters a rough patch that reduces her speed by 44% due to a friction force that is 28% of her weight.A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.860 m/s encounters a rough horizontal surface of length ℓ = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.360 and he exerts a constant horizontal force of 279 N on the crate. A man pushes a crate labeled m, which moves with a velocity vector v to the right, on a horizontal surface. The horizontal surface is textured from the right edge of the crate to a horizontal distance ℓ from the right edge of the crate. (a) Find the magnitude and direction of the net force on the crate while it is on the rough surface. magnitude N direction (b) Find the net work done on the crate while it is on the rough surface. J(c) Find the speed of the crate when it reaches the end of the rough surface. m/sA 4.2 kg particle moving along the x-axis is acted upon by the force whose functional form appears below. The velocity of the particle at x = 0 is v = 6.6 m/s. F (x) (N) 10.0 5.0 x (m) 2.0 6.0 8.0 -5.0 ---- --- -10.0