If the boat goes from 30 km/h to 50 km/h over the next 4 h, what is its acceleration?

Find the momentum for a 2.6-kg brick parachuting straight downward at a constant speed of 8.4 m/s .

When you drop a pebble from height a it reaches the ground with speed v if there is no air resistance. from what height should you drop it so it will reach the ground with three times the speed? (a) 9m (b) 3m (c) 6m (d) 18m

State the right hand rule of the direction of magnetic field in a conductor carrying current