A high jumper of mass 5kg falls 2m, assuming all the gravitational potential energy is converted to kinetic energy what is the speed of the athlete when they land on the mat?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?

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

Astone is thrown with a speed v0 and returns to earth, as the drawing shows. ignore friction and air resistance, and consider the initial and final locations of the stone. which one of the following correctly describes the change δpe in the gravitational potential energy and the change δke in the kinetic energy of the stone as it moves from its initial to its final location? options a.δpe = 0 j and δke = 0 j b.δpe is positive and δke is negative c.δpe = 0 j and δke is positive d.δpe is negative and δke is positive e.δpe = 0 j and δke is negative