A 2 kg hockey puck is pushed with a force of 30 N on a frictionless icy surface to get the puck moving. If the puck is now traveling with a velocity
of 15 m/s how much (if any) force will it take to keep it at this constant
speed if the surface has no friction? (SP2A1)

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles

e/c, where e is its total energy

the maxium height is 34m/s

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it