What is the potential energy of a 0.5 kg ball sitting on a table 1 meter above the ground?
A. 98 J
B. 4.9 J
C. 9.8 J
D. 0.5 J

Hey!!

Mass=0.5kg

H=1 meter

Gravity=9.8m/s^2

Now,

Potential energy=m*g*h

= 0.5*9.8*1

=4.9 J

The right answer is 4.9 Joule.

Hope it helps

Good luck on your assignment

the answer is b, have negligible mass

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer