a）A 74-kg boy is surfing and catches a wave which gives him an initial speed of...
a）A 74-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.5 m/s. How much nonconservative work (in kJ) was done on the boy?
kJ
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a）A 74-kg boy is surfing and catches a wave which gives him an
initial speed of...
A 72-kg boy is surfing and catches a wave which gives him an initial speed of...
A 72-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.5 m/s. How much nonconservative work (in kJ) was done on the boy? kJ Supporting Materials Physical Constants
A 68-kg boy is surfing and catches a wave which gives him an initial speed of...
A 68-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.64 m, and ends with a speed of 8.5 m/s. How much nonconservative work (in kJ) was done on the boy?
To throw a curve ball, a pitcher gives the ball an initial angular speed of 36...
To throw a curve ball, a pitcher gives the ball an initial angular speed of 36 rad/sec. When the catcher gloves the ball 0.595 sec later, it had an average angular deceleration of 0.3 rad/sec^2. What is ball's angular velocity when the catcher catches the ball? How many revolutions does the ball make before being caught? A 500 kg elevator moves upward with acceleration of 2 m/sec^2 though a vertical distance of 25 m. How much work was done by...
42.0 kg boy is sliding on a horizontal, frictionless surface with an initial momentum towards east....
42.0 kg boy is sliding on a horizontal, frictionless surface with an initial momentum towards east. His momentum has magnitude 87.0 kg⋅m/s. Starting at 0 s, a net force with magnitude F=( 8.00 N/s )t and direction due west is applied to the boy. a)At what value of t does the boy have a westward momentum of magnitude 61.0 kg⋅m/? b)How much work has been done on the boy by the force in the time interval from t=t= 0 s...
A basketball player makes a jump shot. The 0.606 kg ball is released at a height...
A basketball player makes a jump shot. The 0.606 kg ball is released at a height of 2.09 m above the floor with a speed of 7.23 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.10 m/s. What is the work done on the ball by air resistance, a nonconservative force?
A basketball player makes a jump shot. The 0.613 kg ball is released at a height...
A basketball player makes a jump shot. The 0.613 kg ball is released at a height of 1.86 m above the floor with a speed of 7.08 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.29 m/s. What is the work done on the ball by air resistance, a nonconservative force?
A basketball player makes a jump shot. The 0.650 kg ball is released at a height...
A basketball player makes a jump shot. The 0.650 kg ball is released at a height of 2.10 m above the floor with a speed of 7.40 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s. What is the work done on the ball by air resistance, a nonconservative force
The surfer in the photo is catching a wave. Suppose she starts at the top of...
The surfer in the photo is catching a wave. Suppose she starts at the top of the wave with a speed of 2.98 m/s and moves down the wave until her speed reaches 14.0 m/s. The drop in her vertical height is 2.29 m. If her mass is 57.4 kg, how much work is done by the (non-conservative) force of the wave?
A boy of mass 25.0 kg skateboards down a quarter pipe of radius 3.00 m. He...
A boy of mass 25.0 kg skateboards down a quarter pipe of radius 3.00 m. He starts from rest and there is no friction. a)Find his speed at the bottom b)Find the normal force at the bottom Example 7.5: if the speed at the bottom is instead 6.00 m/s, what was the work done by friction?
A daredevil on a motorcycle leaves the speed of a ramp with a speed of 33.5...
A daredevil on a motorcycle leaves the speed of a ramp with a speed of 33.5 m/s as in the figure below. If his speed is 31.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance, m A 44.0-kg projectile is fired at an angle of 30.0 degree above the horizontal with an initial speed of 1 40 times 102 m/s from the top of a cliff...
A 72-kg boy is surfing and catches a wave which gives him an initial speed of 1.6 m/s. He then drops through a height of 1.59 m, and ends with a speed of 8.5 m/s. How much nonconservative work (in kJ) was done on the boy? kJ Supporting Materials Physical Constants
To throw a curve ball, a pitcher gives the ball an initial angular speed of 36 rad/sec. When the catcher gloves the ball 0.595 sec later, it had an average angular deceleration of 0.3 rad/sec^2. What is ball's angular velocity when the catcher catches the ball? How many revolutions does the ball make before being caught? A 500 kg elevator moves upward with acceleration of 2 m/sec^2 though a vertical distance of 25 m. How much work was done by...
A daredevil on a motorcycle leaves the speed of a ramp with a speed of 33.5 m/s as in the figure below. If his speed is 31.8 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance, m A 44.0-kg projectile is fired at an angle of 30.0 degree above the horizontal with an initial speed of 1 40 times 102 m/s from the top of a cliff...
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