A football is kicked off with an initial velocity of 9.8 m/s at an angle 450 with the horizontal. The goal keeper at a distance 38 m away in the direction of kick starts running to catch the ball at that instant . What must be his speed , if he is to catch the ball before it hits the ground

area of focus

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.