Kinetics after car left the cliff.

In summary, a car of mass 1515 kg is pushed off a cliff of height 26 m and lands a distance of 14 m from the base of the cliff. To find the kinetic energy of the car after it left the cliff, one needs to use the kinematic equations and calculate the velocity. The calculated velocity is 22.6 m/s using the equation V^2=v_o^2-2(g)(x_f-x_i).
  • #1
dorian_stokes
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Homework Statement


A car of mass m = 1515 kg is pushed off a cliff of height h = 26 m. If the car lands a distance of 14 m from the base of the cliff, what was the kinetic energy of the car the instant after it left the cliff?



Homework Equations





The Attempt at a Solution

Don't even know where to begin because this is a kenetics problem.
 
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  • #2
You need to know the velocity of the car to calculate it's kenitic energy. How can you find the velocity of the car the instant it left the cliff.

Hint: You'll need to use the kenimatic equations you already learned.
 
  • #3
It said to find the kinetic energy after it left the cliff and not the velocity. I calculated the velocity to be 22.6m/s using the V^2=v_o^2-2(g)(x_f-x_i). Is this wrong?
 

1. What is Kinetics after a car has left the cliff?

Kinetics after a car has left the cliff refers to the study of the motion and forces acting on the car as it falls from the cliff. This includes analyzing the velocity, acceleration, and other factors that affect the car's movement.

2. How does the car's weight affect its Kinetics?

The car's weight is a key factor in determining its Kinetics after leaving the cliff. The car's weight creates a downward force, known as gravity, which causes the car to accelerate as it falls. The heavier the car, the greater the force of gravity and the faster the car will fall.

3. What other forces besides gravity affect the Kinetics of the car?

Aside from gravity, air resistance or drag can also affect the Kinetics of the car. As the car falls, it will encounter air resistance, which creates a force in the opposite direction of its motion. This force can slow down the car's acceleration and affect its overall Kinetics.

4. How does the angle of the cliff affect the car's Kinetics?

The angle of the cliff can also impact the car's Kinetics. If the cliff is steep, the car will experience a greater downward force from gravity, resulting in a faster acceleration. On the other hand, if the cliff is less steep, the car may experience a slower acceleration due to a smaller force of gravity.

5. What factors can cause a change in the car's Kinetics after leaving the cliff?

Several factors can cause a change in the car's Kinetics after leaving the cliff. These include the car's weight, air resistance, and the angle of the cliff. Additionally, any external forces acting on the car, such as wind or other objects, can also affect its Kinetics. The car's shape and size can also play a role in its Kinetics as it falls from the cliff.

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