Problem 7.5 Children in a tree house lift a small dog in a basket 4.80 m up to t
ID: 2140980 • Letter: P
Question
Problem 7.5 Children in a tree house lift a small dog in a basket 4.80m up to their house. Part A If it takes 211J of work to do this, what is the combined mass of the dog and basket? ANSWER: m = kg Problem 7.11 A child pulls a friend in a little red wagon with constant speed. Part A If the child pulls with a force of 19N for 15.0m , and the handle of the wagon is inclined at an angle of 25 ? above the horizontal, how much work does the child do on the wagon? Express your answer using two significant figures. ANSWER: W = J Problem 7.19 Part A How much work is needed for a 58kg runner to accelerate from rest to 6.5m/s ? Express your answer using two significant figures. ANSWER: W = J Problem 7.5 Children in a tree house lift a small dog in a basket 4.80m up to their house. Part A If it takes 211J of work to do this, what is the combined mass of the dog and basket? ANSWER: m = kg Problem 7.5 Problem 7.5 Children in a tree house lift a small dog in a basket 4.80m up to their house. Children in a tree house lift a small dog in a basket 4.80m up to their house. Children in a tree house lift a small dog in a basket 4.80m up to their house. Part A If it takes 211J of work to do this, what is the combined mass of the dog and basket? ANSWER: m = kg Part A If it takes 211J of work to do this, what is the combined mass of the dog and basket? ANSWER: m = kg Part A If it takes 211J of work to do this, what is the combined mass of the dog and basket? ANSWER: m = kg ANSWER: m = kg m = kg Problem 7.11 A child pulls a friend in a little red wagon with constant speed. Part A If the child pulls with a force of 19N for 15.0m , and the handle of the wagon is inclined at an angle of 25 ? above the horizontal, how much work does the child do on the wagon? Express your answer using two significant figures. ANSWER: W = J Problem 7.11 Problem 7.11 A child pulls a friend in a little red wagon with constant speed. A child pulls a friend in a little red wagon with constant speed. A child pulls a friend in a little red wagon with constant speed. Part A If the child pulls with a force of 19N for 15.0m , and the handle of the wagon is inclined at an angle of 25 ? above the horizontal, how much work does the child do on the wagon? Express your answer using two significant figures. ANSWER: W = J Part A If the child pulls with a force of 19N for 15.0m , and the handle of the wagon is inclined at an angle of 25 ? above the horizontal, how much work does the child do on the wagon? Express your answer using two significant figures. ANSWER: W = J Part A If the child pulls with a force of 19N for 15.0m , and the handle of the wagon is inclined at an angle of 25 ? above the horizontal, how much work does the child do on the wagon? Express your answer using two significant figures. ANSWER: W = J ANSWER: W = J W = J Problem 7.19 Part A How much work is needed for a 58kg runner to accelerate from rest to 6.5m/s ? Express your answer using two significant figures. ANSWER: W = J Problem 7.19 Problem 7.19 Part A How much work is needed for a 58kg runner to accelerate from rest to 6.5m/s ? Express your answer using two significant figures. ANSWER: W = J Part A How much work is needed for a 58kg runner to accelerate from rest to 6.5m/s ? Express your answer using two significant figures. ANSWER: W = J Part A How much work is needed for a 58kg runner to accelerate from rest to 6.5m/s ? Express your answer using two significant figures. ANSWER: W = J ANSWER: W = J W = J m = kgExplanation / Answer
mgh=211
m=4.48 kg
b)19*cos25*15=258.2977 J
c).5mv^2=workdone=1225.25 J