a cannon recoils when fired, as a result of action-reaction force pairs. the acceleration of the recoiling cannon is

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

Awave that is traveling fast can be said to have a high a. frequency b. speed c. wavelength d. amplitude e. period f. none of these

When an orange rolls off a table, its potential energy is converted into?