Question

A skateboarder coasts at a constant velocity toward a ramp with a 15° angle, preparing for the big trick jump. If the frictionless ramp is 3m long, and his initial velocity at the base of the ramp is 5 m/s, calculate

            a)        his final speed at the end of the ramp

/5

            b)        the component of the force of gravity parallel to the ramp, if his mass is 30 kg.

/2

My course hasn't taught law of conservation of energy yet, so I am probably not allowed to use it. Only gone over kinematic equations, newtons laws, and forces(normal, gravity, friction, tension, applied).

Answer 1