A hockey puck with an initial speed of 8.0 m/s coasts 45 m to a stop across the ice. If the force of friction on the puck has a magnitude o.12 N, what is the puck's mass?

What are atoms of the same element with varying number of neutrons

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?