Physics
posted by Sarah .
Philadelphia Flyers player Mike Richards stands on the frictionless ice next to the goal. Neither Mike nor the goal are anchored to the ice. Frustrated after a recent playoff loss, 102.5kg Mike suddenly pushes on the goal, sending it across the ice a 2.80m/s. Mike recoils in the opposite direction at velocity 1.12m/s. Find the mass of the goal

m2 =m1•v1/v2 =102.5•1.12/2.8 = 41 kg
Respond to this Question
Similar Questions

English
what does it mean when someone said? how is Mike,Is he behaving himself? 
Math
Josh and Mike live 13 miles apart. Yesterday Josh started to ride his bicycle toward Mike's house. When they met, Josh had ridden for twice the length of time as Mike and at 4/5 of Mike's rate. How many miles had Mike ridden when they … 
addition and subtraction of vectors
In a soccer match, the goal keeper stands on the midpoint of her goal line. she kicks the ball 25m at an angle of 35deg to the goal line. her teammate takes the pass and kicks it 40m farther, parallel to the sideline. The resultant … 
English
Identify the correct sentence. A. Neither Mike nor Corrine made it to class yesterday; do anyone have the notes? 
MATH HW HELP!!
Mike Gioulis would like to have $25,000 in 4 years to pay off a balloon payment on his business mortgage. His money market account is paying 1.825% compounded daily. Disregarding leap years, how much money must Mike put in his account … 
Kirr
Mike would like to have $25,000 in 4 years to pay off a balloon payment on his business mortgage . His money market account is paying 1.825% compounded daily. disregarding leap years, how much money must mike put in his account now … 
physics
A 98.0 kg ice hockey player hits a 0.150 kg puck, giving the puck a velocity of 49.5 m/s. If both are initially at rest and if the ice is frictionless, how far does the player recoil in the time it takes the puck to reach the goal … 
probability
Mike Vanderjagt is the most accurate kicker in the history of professional football. He makes 91.2% of his field goal attempts. What is the probability that he will miss at most 1 out of the next 4? 
English
Identify the correct sentence. a.Neither Mike nor Corrine made it to class yesterday; do anyone have the notes? 
Psychology
A company that wants to increase the productivity of its workers should set which kind of goal?