Consider an 80 kg man and 320 kg horse both running along a road with the...
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Consider an 80 kg man and 320 kg horse both running along a
road with the...
Leg Spring (Running) Running without springs would be exhausting. Consider a 70 kg person running at...
Leg Spring (Running) Running without springs would be exhausting. Consider a 70 kg person running at 4 m/sec. During each step their COM sinks 4 cm (below resting) during stance and rises 2 cm (above resting) during the aerial phase. Determine the positive work they must do against gravity with each step. Then, calculate the power they must put out with each step. If their forward speed fluctuates by 10% during each stance phase (i.e., 3.6 m/s at mid-stance), determine...
Suppose there is no friction on a roller coaster, a man of 80 Kg mass decides...
Suppose there is no friction on a roller coaster, a man of 80 Kg mass decides to skate on this roller coaster, the man is located at the highest point that is 32 m high, wants to get a speed record when he arrives to the lowest point. Determine: a) How much is the mechanical energy at the highest point, and still not moving? b) How much is the mechanical energy at the lowest point of the roller coaster? c)...
A man with a mass 80 kg tries to cross a river by swinging from a...
A man with a mass 80 kg tries to cross a river by swinging from a vine. The vine is 11.5 m long and his speed at the bottom is 8.25 m/s. What is the kinetic energy at the bottom of the swing? What is the tension at the bottom of the swing? If the total energy is equal to the KE at the bottom, what angle does the vine make with the vertical when the man first starts swinging...
One runner has a mass of 40 kg, while another has a mass of 80 kg....
One runner has a mass of 40 kg, while another has a mass of 80 kg. The two runners have the same kinetic energy. Is one running faster than the other? If yes, which one, and by what factor is her speed greater?
A man of mass 78.0 kg walks down the awe of an airplane at a speed...
A man of mass 78.0 kg walks down the awe of an airplane at a speed of 1.20 mys in the forward direction while the plane moves at a speed of 320 m/s relative to the earth (a) Find the man's kinetic energy relative to the plane (b) Find the man's kinetic energy relative to the earth Submit Answer
A 1050-kg sports car is moving westbound at 15.0 m/s on a level road when it...
A 1050-kg sports car is moving westbound at 15.0 m/s on a level road when it collides with a 6320-kg truck driving east on the same road at 10.0 m/s. The two vehicles remain locked together after the collision. (a) What is the velocity (magnitude and direction) of the two vehicles just after the collision? (b) At what speed should the truck have been moving so that it and the car are both stopped in the collision? (c) Find the...
correct answer is 3. pls explain well. A man weighing 80 kg is standing in a...
correct answer is 3. pls explain well.
A man weighing 80 kg is standing in a trolley weighing 320 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a speed of 1 m/s, then after 4 sec his displacement relative to the ground will be (1) 5 m (3) 3.2 m (2) 4.8 m (4) 3.0 m
Calculate both the relative and absolute VO2 for an 85kg man running on a treadmill at...
Calculate both the relative and absolute VO2 for an 85kg man running on a treadmill at a speed of 6.5mph with an 3% grade. ACSM Running Equation VO2 = (Speed x 0.2) + (Speed x Grade x 0.9) + 3.5 *Note: Convert speed from MPH to m/min by multiplying x 26.8 Relative: ___________ml/kg/min Absolute: __________ ml/min _____________L/min
Consider a system of an 85.0-kg man, his 15.5-kg dog, and the earth. The gravitational potential...
Consider a system of an 85.0-kg man, his 15.5-kg dog, and the earth. The gravitational potential energy of the system increases by 2.25 times 10^3 J when the man climbs a spiral staircase from the first to the second floor of an apartment building. If his dog climbs a normal staircase from the same first floor to the second floor, by how much does the potential energy of the system increase?
A 1050 kg sports car is moving westbound at 15.0 m/s on a level road when...
A 1050 kg sports car is moving westbound at 15.0 m/s on a level road when it collides with a 6320 kg truck driving east on the same road at 12.0 m/s . The two vehicles remain locked together after the collision. (need help with D and E) A) What is the velocity (magnitude) of the two vehicles just after the collision? 8.15 m/s C) At what speed should the truck have been moving so that it and car are...
A man of mass 78.0 kg walks down the awe of an airplane at a speed of 1.20 mys in the forward direction while the plane moves at a speed of 320 m/s relative to the earth (a) Find the man's kinetic energy relative to the plane (b) Find the man's kinetic energy relative to the earth Submit Answer
A 1050-kg sports car is moving westbound at 15.0 m/s on a level road when it collides with a 6320-kg truck driving east on the same road at 10.0 m/s. The two vehicles remain locked together after the collision. (a) What is the velocity (magnitude and direction) of the two vehicles just after the collision? (b) At what speed should the truck have been moving so that it and the car are both stopped in the collision? (c) Find the...
correct answer is 3. pls explain well.
A man weighing 80 kg is standing in a trolley weighing 320 kg. The trolley is resting on frictionless horizontal rails. If the man starts walking on the trolley with a speed of 1 m/s, then after 4 sec his displacement relative to the ground will be (1) 5 m (3) 3.2 m (2) 4.8 m (4) 3.0 m
Consider a system of an 85.0-kg man, his 15.5-kg dog, and the earth. The gravitational potential energy of the system increases by 2.25 times 10^3 J when the man climbs a spiral staircase from the first to the second floor of an apartment building. If his dog climbs a normal staircase from the same first floor to the second floor, by how much does the potential energy of the system increase?
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