Agolf ball with an initial angle of 32° lands exactly 224 m down the range on a level course.

(a) neglecting air friction, what initial speed would achieve this result? [m/s]
(b) using the speed determined in item (a), find the maximum height reached by the ball. [m]

Explanation:

Given

launch angle

ball lands exactly 224 m

Range of projectile =224 m

u=49.42 m/s

(b)Maximum height reached

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

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.