Francine is standing on the edge of a cliff. She determines that she has 6615J of gravitational potential energy relative to the bottom of the cliff. If she has a mass of 45kg, how high is the cliff?

h = 14.98 [m]

Explanation:

We can calculate this height using the definition of potential energy, which tells us that this energy is equal to the product of mass by gravitational acceleration by height. In this way we can find the height, by means of the following equation:

where:

Epot = potential energy = 6615 [J]

m = mass = 45 [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation [m]

i think they are all correct

explanation:

they seem good

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.