Homework Answers
A body of mass m = 5 kg is released from rest from a height of...
A body of mass m = 5 kg is released from rest from a height of 2 m above the ground. (a) What is the kinetic energy of the body just before hitting the ground? (b) At that point, what is its speed?
6. A 2.00-kg rock is released from rest at a height of 30.0 m. Ignore air...
6. A 2.00-kg rock is released from rest at a height of 30.0 m. Ignore air resistance and determine (a) the kinetic energy at 30.0 m. (b) the gravitational potential energy at 30.0 m, (c) the total mechanical energy at 30.0 m, (d) the kinetic energy at 0 m, (e) the gravitational potential energy at 0 m, and (f) the total mechanical energy at 0 m. ( 6 pts,) A person in a kayak starts paddling, and it accelerates from...
A rubber ball of mass 0.170 kg is released from rest from a height of 1.25...
A rubber ball of mass 0.170 kg is released from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.730 m. What impulse was applied to the ball by the floor? (You may safely ignore air resistance. Enter the magnitude in kg. m/s, and select the direction from the given options.) magnitude kg. m/s direction -Select-
A tennis ball of mass 0.588 kg is released from rest from a height of 1.25...
A tennis ball of mass 0.588 kg is released from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.985 m. What impulse was applied to the ball by the floor? (You may safely ignore air resistance. Enter the magnitude in kg · m/s, and select the direction from the given options.) magnitude kg · m/s direction Please explain your work.
M 7 A mass M = 1.2 kg is released from rest. From the initial height...
M 7 A mass M = 1.2 kg is released from rest. From the initial height of 75 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 590 N/m The maximum compression of the spring, due to the impact of the dropping mass is sh = 160 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the ground level as...
M A mass M-1.2 kg is released from rest. From the initial height of 75 cm...
M A mass M-1.2 kg is released from rest. From the initial height of 75 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 590 N/m. The maximum compression of the spring, due to the impact of the dropping mass is sh = 160 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the ground level as reference of the...
A roller coaster car of mass 800 kg when released from rest at point A (height...
A roller coaster car of mass 800 kg when released from rest at
point A (height h above the ground) slides along the track and
inside the loop of radius 16.0 m. The car never loses contact with
the track.
A) Draw below a free body diagram for the car the car at the top
of the loop.
B) If the normal force acting on the car at the top is 1500 N,
what is the speed of the car...
A roller coaster car of mass 800 kg when released from rest at point A (height...
A roller coaster car of mass 800 kg when released from rest at
point A (height h above the ground) slides along the track and
inside the loop of radius 16.0 m. The car never loses contact with
the track.
A) Draw below a free body diagram for the car the car at the top
of the loop.
B) If the normal force acting on the car at the top is 1500 N,
what is the speed of the car...
te M of estion M A mass M = 1.2 kg is released from rest. From...
te M of estion M A mass M = 1.2 kg is released from rest. From the initial height of 90 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 580 N/m. The maximum compression of the spring, due to the impact of the dropping mass is dh = 180 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the...
A block of mass m = 7.40 kg is released from rest from point and slides...
A block of mass m = 7.40 kg is released from rest from point and slides on the frictionless track shown in the figure below. (Let h_a = 5.20 m.) Determine the block's speed at points Where is the energy stored at point A? Where is the energy stored at point B? m/s Determine the net work done by the gravitational force on the block as it moves from point to point
6. A 2.00-kg rock is released from rest at a height of 30.0 m. Ignore air resistance and determine (a) the kinetic energy at 30.0 m. (b) the gravitational potential energy at 30.0 m, (c) the total mechanical energy at 30.0 m, (d) the kinetic energy at 0 m, (e) the gravitational potential energy at 0 m, and (f) the total mechanical energy at 0 m. ( 6 pts,) A person in a kayak starts paddling, and it accelerates from...
A rubber ball of mass 0.170 kg is released from rest from a height of 1.25 m. It rebounds from the floor to reach a height of 0.730 m. What impulse was applied to the ball by the floor? (You may safely ignore air resistance. Enter the magnitude in kg. m/s, and select the direction from the given options.) magnitude kg. m/s direction -Select-
M 7 A mass M = 1.2 kg is released from rest. From the initial height of 75 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 590 N/m The maximum compression of the spring, due to the impact of the dropping mass is sh = 160 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the ground level as...
M A mass M-1.2 kg is released from rest. From the initial height of 75 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 590 N/m. The maximum compression of the spring, due to the impact of the dropping mass is sh = 160 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the ground level as reference of the...
A roller coaster car of mass 800 kg when released from rest at
point A (height h above the ground) slides along the track and
inside the loop of radius 16.0 m. The car never loses contact with
the track.
A) Draw below a free body diagram for the car the car at the top
of the loop.
B) If the normal force acting on the car at the top is 1500 N,
what is the speed of the car...
A roller coaster car of mass 800 kg when released from rest at
point A (height h above the ground) slides along the track and
inside the loop of radius 16.0 m. The car never loses contact with
the track.
A) Draw below a free body diagram for the car the car at the top
of the loop.
B) If the normal force acting on the car at the top is 1500 N,
what is the speed of the car...
te M of estion M A mass M = 1.2 kg is released from rest. From the initial height of 90 cm above the ground, the mass drops from an free spring (neither compressed, nor extended) of constant k = 580 N/m. The maximum compression of the spring, due to the impact of the dropping mass is dh = 180 mm. Analyse the system with respect to the balance of energy, and the apply the conservation of energy, considering the...
A block of mass m = 7.40 kg is released from rest from point and slides on the frictionless track shown in the figure below. (Let h_a = 5.20 m.) Determine the block's speed at points Where is the energy stored at point A? Where is the energy stored at point B? m/s Determine the net work done by the gravitational force on the block as it moves from point to point
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