A hurdler is 0.535 m from a hurdle when he jumps at 6.82 m/s at a
67.9° angle. What is his height
when he clears the hurdle?
(Hint: It is not necessarily at
the highest point in his motion.)

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

Aforce or 500 n separates two objects the distance between their centers is 67 m the first object has a mass of 20kg what is the mass of the second