Throwing a stone off a bridge

A man standing on a bridge 30m above the water throws a stone in a horizontal direction. Knowing that the stone hits the water 40m from a point on the water directly below the man determine (a)the initial velocity of the stone (b)the distance at which the stone would hit the water if it were thrown with the same velocity from a ...continues

maximum height

A water cannon fires a steady stream that reaches a height of 1000 ft and strikes the same horizontal plane 4300m from where it is fired (hint: maximum height is 1000 ft). What is the velocity (magnitude and direction) of the water leaving the cannon?

two-dimensional motion

In two-dimensional motion, such as projectile motion, we can write the acceleration as: a=gj (this is vector j) This implies what about the velocity and displacement of the projectile?

Basic physics

Please see the attached file for full problem description.

Projectile motion

Please see attachment. Please use very basic physics on this. Like the range equation, not mgh or kinetic or potential energy. Thanks.

Basic physics

Please see the attached file for full problem description. Please use very basic physics with this. No kinetic or potential energy equations. Thanks.

Basic physics

Please see the attached file for full problem description.

Vectors

Prove that S*(PxQ) = P*(QxS) where * is dot product and x is cross product if S=Sxi+Syj+Szk P=Pxi+Pyj+Pzk Q=Qxi+Qyj+Qzk

Basic physics

Please see the attached file for full problem description.

Kinematics problem

A car travels 600. m one way with a speed of 40. m/s and then travels 600. m in another way at 20. m/s.What is the car's average speed? (Caution: The answer is not 30. m/s.)