1. pulling tug of war
2. monkey swinging from vine
3. arm wrestle
Answer:
Explanation: Determine the gravitational acceleration. ...
Decide whether the object has an initial velocity. ...
Choose how long the object is falling. ...
Calculate the final free fall speed (just before hitting the ground) with the formula v = v₀ + gt
Answer:
1950 kpa
Explanation:
9 ÷ .6 = 15 times the speed. so 15 times the pressure 130 x15 = 1950 kpa
Answer:
Energy converted to heat and sound. Deformation of soil or ground may also take up some energy.
Explanation:
When the rock hits the ground, a part of the energy is converted to heat (thermal energy) and sound. If the ground is soft, it will be compressed by the rock when it lands. This deformation of the ground will take up some of the energy.
We can think of kinetic energy being transferred to the ground in the following way:
1. Ball hits the ground, and transfers kinetic energy to lots of soil particles.
2. Soil particles move a bit and transfer the energy to soil particles ahead of them.
3. Kinetic energy is transferred to a very large number of soil particles, and they move so little that we consider this vibration motion.
4. This small vibration motion is now considered as internal energy or 'heat'.