A50 kg ice skater is gliding along the ice, heading due north at 4.0 m/s. the ice has a small coefficient of static friction, to prevent the skater from slipping sideways, but mk = 0. suddenly, a wind from the northeast exerts a force of 4.0 n on the skater.

a.) use work and energy to find the skater’s speed after gliding 100 m in this wind.

b.)what is the minimum value of ms that allows her to continue moving straight north?

Abicycle slows down when the rider applies the brakes. what type of energy transformation is involved in this example? a. kinetic energy into heat energy b. heat energy into potential energy c. potential energy into kinetic energy d. kinetic energy into mechanical energy

Select all that applywhat are some basic resources a family is expected to provide for children? educationclothesspending

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.