Practice Problems- Potential and Kinetic Energy GPE = mgh
KE = 42 mv2
1. A rifle can shoot a 0.0042 kg bullet at a speed of 965 m/s. Find the kinetic energy of the bullet.
Equation Work Answer with Units
Equation
Work
Answer
2. An automobile to be transported by ship is raised 73 m above the dock If it co

force tends to be low and long diustance masses are high

when two balls of the different masses are dropped from equal height, they reach the ground at the same time .this is because they experience the same acceleration.

the acceleration is independent of mass.

thus when they are dropped they will always maintain the same velocity and travel the same distance (neglect air resistance of course) at the same time.

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

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle