Aball dropped from the roof of a tall building will fall approximately how far in two seconds? (a) 10 m, (b) 20 m, (c) 30 m, (d) 40 m, (e) 50 m.

The ball covered the distance in 2 second is 20 m.

(b) is correct option.

Explanation:

Given that,

Time = 2 sec

Using equation of motion

Where, s = height

u = initial velocity

g = acceleration due to gravity

t = time

Put the value in the equation

Hence, The ball covered the distance in 2 second is 20 m.

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.