Bob, who has a mass of 71 kg , can throw a 480 g rock with...
Bob, who has a mass of 71 kg , can throw a 480 g rock with a speed of 31 m/s . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 m.
a. What constant force must Bob exert on the rock to throw it with this speed?
b. If Bob is standing on frictionless ice, what is his recoil speed after releasing the rock?
Homework Answers
Bob, who has a mass of 78 kg , can throw a 470 g rock with...
Bob, who has a mass of 78 kg , can throw a 470 g rock with a speed of 33 m/s . The distance through which his hand moves as he accelerates the rock forward from rest until he releases it is 1.0 m. a) What constant force must Bob exert on the rock to throw it with this speed? b) If Bob is standing on frictionless ice, what is his recoil speed after releasing the rock?
take r ro be 1.0 m 1. A small block of mass 0.5 kg compresses a...
take r ro be 1.0 m
1. A small block of mass 0.5 kg compresses a spring (K 500 N/m) a distance of x 0.50 m. The block is released from rest and travels along a frictionless, horizontal surface until it reaches point A. After point A is moves along the circular path while experiencing an frictional force of magnitude 6.0 N. a) Calculate the speed when it reaches the top of the circular path. (Use work-energy methods to solve...
Sam, whose mass is 71 kg , straps on his skis and starts down a 40...
Sam, whose mass is 71 kg , straps on his skis and starts down a 40 m -high, 20∘ frictionless slope. A strong headwind exerts a horizontal force of 200 N on him as he skies. Use work and energy to find Sam's speed at the bottom.
A toy elevator is raised from the ground floor to the second floor in 20 seconds....
A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power need using 1000 J of work, is 20,000 W. 100 W. 50 W. 1000 W. 20 W. It is correct to say that impulse is equal to a corresponding change In momentum. force multiplied by the distance it act velocity multiplied by time. momentum. A skydiver steps from a helicopter and falls for a few seconds until terminal velocity is reach Thereafter,...
please give me detailed answer thank you Sam, whose mass is 71 kg , straps on...
please give me detailed answer thank
you
Sam, whose mass is 71 kg , straps on his skis and starts down a 58 m -high, 20 degree frictionless slope. A strong headwind exerts a horizontal force of 200 N on him as he skies. Use work and energy to find Sam's speed at the bottom. Express your answer to two significant figures and include the appropriate units.
The Great Sandini is a 60-kg circus performer who is shot from a cannon (actually a...
The Great Sandini is a 60-kg circus performer who is shot from a cannon (actually a spring gun). You don't find many men of his caliber, so you help him design a new gun. This new gun has a very large spring with a very small mass and a force constant of 1300 N/m that he will compress with a force of 3900 N . The inside of the gun barrel is coated with Teflon, so the average friction force...
A 15.0 kg mass is hoisted using a rope that passes over a single frictionless pulley...
A 15.0 kg mass is hoisted using a rope that passes over a single frictionless pulley of negligible mass. If the mass accelerates upward with an acceleration of 1.25 m/s2, what force is being exerted on the rope. a. 175 N 6.210 N C 193 N. d. 166 N QUESTION 14 While roller skating a 60.0 kg child, distracted by his friend, accidentally runs into the back of a 40.0 kg child who is at rest. Before the collision, the...
Pug the Rock-hopper penguin has a speed of 8.00 m/s at point A. His mass is...
Pug the Rock-hopper penguin has a speed of 8.00 m/s at point A. His mass is 4.00 kg. The hill between points A and C is frictionless a. Pug slides down the hill from point A to point B. Calculate Pug’s speed at point B.Pug arrives at point C and has an inelastic collision with Zazza the Adelie penguin, who is initially at rest and is 2.00 kg. After the collision Zazza is moving rightwards at 18.0 m/s. b. Calculate...
Instructions for PHY 2048 Problem Set (PSET): (1) Please NEATLY write your name and your solutions....
Instructions for PHY 2048 Problem Set (PSET): (1) Please NEATLY write your name and your solutions. (2) You must use blank 8"x11" printer paper. (3) Begin each problem on a new page, and put your name on each page. Staple your pages together. 4) Only write on one side of the page. (5) You must write up your solutions independently (i.e. don't copy anyone else's solutions), using your own words and thought process. You must show all of your work....
14. Two masses are connected by a string which passes over a pulley with negligible mass...
14. Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a frictionless 30.0 degree incline. The vertically hanging mass is 6.00 kg and the mass on the incline is 4.00 kg. The magnitude of the acceleration of the 4.00 kg mass is 15. Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs...
take r ro be 1.0 m
1. A small block of mass 0.5 kg compresses a spring (K 500 N/m) a distance of x 0.50 m. The block is released from rest and travels along a frictionless, horizontal surface until it reaches point A. After point A is moves along the circular path while experiencing an frictional force of magnitude 6.0 N. a) Calculate the speed when it reaches the top of the circular path. (Use work-energy methods to solve...
A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power need using 1000 J of work, is 20,000 W. 100 W. 50 W. 1000 W. 20 W. It is correct to say that impulse is equal to a corresponding change In momentum. force multiplied by the distance it act velocity multiplied by time. momentum. A skydiver steps from a helicopter and falls for a few seconds until terminal velocity is reach Thereafter,...
please give me detailed answer thank
you
Sam, whose mass is 71 kg , straps on his skis and starts down a 58 m -high, 20 degree frictionless slope. A strong headwind exerts a horizontal force of 200 N on him as he skies. Use work and energy to find Sam's speed at the bottom. Express your answer to two significant figures and include the appropriate units.
A 15.0 kg mass is hoisted using a rope that passes over a single frictionless pulley of negligible mass. If the mass accelerates upward with an acceleration of 1.25 m/s2, what force is being exerted on the rope. a. 175 N 6.210 N C 193 N. d. 166 N QUESTION 14 While roller skating a 60.0 kg child, distracted by his friend, accidentally runs into the back of a 40.0 kg child who is at rest. Before the collision, the...
Instructions for PHY 2048 Problem Set (PSET): (1) Please NEATLY write your name and your solutions. (2) You must use blank 8"x11" printer paper. (3) Begin each problem on a new page, and put your name on each page. Staple your pages together. 4) Only write on one side of the page. (5) You must write up your solutions independently (i.e. don't copy anyone else's solutions), using your own words and thought process. You must show all of your work....
14. Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs vertically and one mass slides on a frictionless 30.0 degree incline. The vertically hanging mass is 6.00 kg and the mass on the incline is 4.00 kg. The magnitude of the acceleration of the 4.00 kg mass is 15. Two masses are connected by a string which passes over a pulley with negligible mass and friction. One mass hangs...
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