Abullet with a mass =13.5mb=13.5 g is fired into a block of wood at velocity =253vb=253 m/s. the block is attached to a spring that has a spring constant of 205205 n/m. the block and bullet continue to move, compressing the spring by 35.035.0 cm before the whole system momentarily comes to a stop. assuming that the surface on which the block is resting is frictionless, determine the mass of the wooden block.

What causes the formation of ocean currents?

Astudent throws a water balloon with speed v0 from a height h = 1.76 m at an angle θ = 21° above the horizontal toward a target on the ground. the target is located a horizontal distance d = 9.5 m from the student’s feet. assume that the balloon moves without air resistance. use a cartesian coordinate system with the origin at the balloon's initial position. (a) what is the position vector, rtarge t, that originates from the balloon's original position and terminates at the target? put this in terms of h and d, and represent it as a vector using i and j. (b) in terms of the variables in the problem, determine the time, t, after the launch it takes the balloon to reach the target. your answer should not include h. (c) create an expression for the balloon's vertical position as a function of time, y(t), in terms of t, vo, g, and θ. (d) determine the magnitude of the balloon's initial velocity, v0, in meters per second, by eliminating t from the previous two expressions.

Which planet do you think would be easiest for humans to colonize some day?