An object which has a mass 70 kg is sitting on a cliff 10 m high . calculate the objects gravitational potential energy given g=10m/s2

7000 joules

Explanation: The potential energy is the energy "stored" by the object.

For objects that are lifted in the y-axis, the potential energy can be calculated as:

U = g*h*m

where g is the gravity's acceleration, h is the height and m is the mass of the object.

Here, g = 10m/s^2, m=70kg and h = 10m

U = 10m/s^2*70kg*10m = 7000 (m/s)^2*kg = 7000 joules

there are no contact forces mentioned on the list of choices that you've provided.

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000