Aspace shuttle is approaching the surface of the moon to land. it approaches the moons surface with an initial velocity of 28m/s and is slowing at a rate of -2m/s^2. show all work and units for problems. a) draw velocity vs time graph
b) when will shuttles velocity equal zero?
c) how far above the surface of the moon was the shuttle when it began to slow down?

Explanation:

a ) Velocity vs time graph will be a straight line with negative slope , making a slope of 2 because slope of v-t graph gives the value of acceleration.

b ) v = 0 , u = 28 m/s

t = ?

v = u - at

0 = 28 - 2 t

t = 14 s

shuttle velocity will become zero after 14 sec.

c ) v ² = u² - 2 a s

0 = 28² - 2 x 2 x s

s = 28² / 4

= 196 m .

their crystal patterns have been disrupted by stress

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.