Answer:
Wrong its B Use a different amount of mass in the cart for five different trials, roll the cart down a ramp with the same slope for each trial, and measure how long it takes the cart to roll one meter each time.
Explanation:
- Kinetic Energy of an object is the measure of the work an object can do by virtue of its motions..
- Where KE is the kinetic energy, m is the body’s mass, and v is the body’s velocity.
- Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts..
Where,
. m is the mass in kilograms
. g is the acceleration due to gravity
. h is the height in meters
Hope it helpz~ uh..
Answer:
the right answer is density of metal v1.v2
Power consumed = P = 78.0 W
Time taken = t = 10 minutes
Energy consumed = E = ?
The power, energy and time are related by the following equation:
P = E / t
Using the values, we get
78 = E/t
So,
E = 780
This means, 780 Joules of energy was used during the 10 minutes