1. Kinematics (Calculating Velocity, Using Kinetic Energy) Ø If a 50 kg cart is
ID: 1419661 • Letter: 1
Question
1. Kinematics (Calculating Velocity, Using Kinetic Energy)
Ø If a 50 kg cart is moving on a frictionless surface with 10 J of energy, what is the velocity of the cart?
2. Kinematics (Calculating Velocity, Using kinematic Equations)
Ø An asteroid has net velocity of 400 km/s, and a net acceleration of 14 m/s if the asteroid continues at that constant acceleration. What would be its final velocity?
3. Collisions ( Elastic Collisions)
Ø A car weighing 20 kg collides with a car of equal mass at 30 m/s and both cars bounce off each other elastically. What is that velocity of the second car?
4. Collisions (Inelastic)
Ø Mike is driving a 20,000 kg truck at 30 m/s, and Carl drives a little Saturn that has a mass 2,000 kg. If mike, traveling at that speed, hits Carl’s car. What will be the final velocity of both vehicles if they collide inelacticllay?
5. Force and Acceleration
Ø Oracle is sorting packages. Oracle is so strong that he can push a 90 kg box down the line with a force of 55 N. What is the acceleration of the box?
6. Acceleration and Force
Ø Achilles to compete in strong man competitions. If Achilles can pull a 1,500 kg fire truck with an acceleration of 10m/s, how much forward force is Achilles using? (negate friction)
7. Acceleration Equation
Ø An Aston Martin that has a mass of 1100 kg rolls down a hill that has an angle of 30 degrees. Calculate the acceleration.
8. Velocity, Acceleration and Position Graphs
Ø If Acceleration is at a constant positive position what does that say about the position and velocity graphs?
9. Velocity, Acceleration and Position Graphs
Ø When velocity is considered negative on a velocity verse time graph?
10. Conservation of Energy
Ø Explain the difference be elastic and in elastic collisions. When is momentum conserved? When is kinetic energy conserved?
11. Conservation of Energy
Ø What is total energy?
Explanation / Answer
1)
here by using the formula
KE = 0.5 * m * v^2
10 = 0.5 * 50 * v^2
v = sqrt( 10 / 25)
v = 0.632 m/s
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