An ice hockey puck slides along the ice at 12 m/s.?
a hockey stick delivers an impulse of 4.0 kg x m/s causing the puck to move off in the opposite direction with the same speed.
what is the mass of the puck in kg?

What do you think car designers do if the damage caused by a crash test is too severe?

The weights of bags filled by a machine are normally distributed with a standard deviation of 0.05 kilograms and a mean that can be set by the operator. at what level should the mean weight be set if it required that only 1% of the bags weigh less than 9.5 kilograms? round the answer to 2 decimal places.

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?